Home / 15,113,700.16-20,856,938.08-9,890,291.28

Finding the Fourth Proportional to 15,113,700.16, 20,856,938.08 and 9,890,291.28

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Solution

The fourth proportional to 15,113,700.16, 20,856,938.08 and 9,890,291.28 is: 13,648,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113,700.16 : 20,856,938.08 = 9,890,291.28 : x
  2. Step 2: Convert to fraction form
    15,113,700.16/20,856,938.08 = 9,890,291.28/x
  3. Step 3: Cross multiply
    15,113,700.16x = 20,856,938.08 × 9,890,291.28
  4. Step 4: Simplify right side
    15,113,700.16x = 206,281,192,820,123.91
  5. Step 5: Solve for x
    x = 206,281,192,820,123.91/15,113,700.16
  6. Step 6: Final answer
    x = 13,648,622.81

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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.