Home / 13,130,045.72-18,119,418.12-7,328,777.12

Finding the Fourth Proportional to 13,130,045.72, 18,119,418.12 and 7,328,777.12

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Solution

The fourth proportional to 13,130,045.72, 18,119,418.12 and 7,328,777.12 is: 10,113,687.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130,045.72 : 18,119,418.12 = 7,328,777.12 : x
  2. Step 2: Convert to fraction form
    13,130,045.72/18,119,418.12 = 7,328,777.12/x
  3. Step 3: Cross multiply
    13,130,045.72x = 18,119,418.12 × 7,328,777.12
  4. Step 4: Simplify right side
    13,130,045.72x = 132,793,176,945,569.42
  5. Step 5: Solve for x
    x = 132,793,176,945,569.42/13,130,045.72
  6. Step 6: Final answer
    x = 10,113,687.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.