Home / 28,549,420.16-42,824,191.20-20,067,709.76

Finding the Fourth Proportional to 28,549,420.16, 42,824,191.20 and 20,067,709.76

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Solution

The fourth proportional to 28,549,420.16, 42,824,191.20 and 20,067,709.76 is: 30,101,607.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549,420.16 : 42,824,191.20 = 20,067,709.76 : x
  2. Step 2: Convert to fraction form
    28,549,420.16/42,824,191.20 = 20,067,709.76/x
  3. Step 3: Cross multiply
    28,549,420.16x = 42,824,191.20 × 20,067,709.76
  4. Step 4: Simplify right side
    28,549,420.16x = 859,383,439,708,346.25
  5. Step 5: Solve for x
    x = 859,383,439,708,346.25/28,549,420.16
  6. Step 6: Final answer
    x = 30,101,607.49

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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.