Home / 10,140.11-13,973.42-7,752.78

Finding the Fourth Proportional to 10,140.11, 13,973.42 and 7,752.78

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Solution

The fourth proportional to 10,140.11, 13,973.42 and 7,752.78 is: 10,683.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.11 : 13,973.42 = 7,752.78 : x
  2. Step 2: Convert to fraction form
    10,140.11/13,973.42 = 7,752.78/x
  3. Step 3: Cross multiply
    10,140.11x = 13,973.42 × 7,752.78
  4. Step 4: Simplify right side
    10,140.11x = 108,332,812.34
  5. Step 5: Solve for x
    x = 108,332,812.34/10,140.11
  6. Step 6: Final answer
    x = 10,683.59

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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.