Home / 18,988,992,002.80-28,483,488,004.20-13,111,679,695.60

Finding the Fourth Proportional to 18,988,992,002.80, 28,483,488,004.20 and 13,111,679,695.60

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Solution

The fourth proportional to 18,988,992,002.80, 28,483,488,004.20 and 13,111,679,695.60 is: 19,667,519,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988,992,002.80 : 28,483,488,004.20 = 13,111,679,695.60 : x
  2. Step 2: Convert to fraction form
    18,988,992,002.80/28,483,488,004.20 = 13,111,679,695.60/x
  3. Step 3: Cross multiply
    18,988,992,002.80x = 28,483,488,004.20 × 13,111,679,695.60
  4. Step 4: Simplify right side
    18,988,992,002.80x = 373,466,371,324,535,308,288
  5. Step 5: Solve for x
    x = 373,466,371,324,535,308,288/18,988,992,002.80
  6. Step 6: Final answer
    x = 19,667,519,543.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.