Home / 39,140.18-58,720-11,438.18

Finding the Fourth Proportional to 39,140.18, 58,720 and 11,438.18

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Solution

The fourth proportional to 39,140.18, 58,720 and 11,438.18 is: 17,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,140.18 : 58,720 = 11,438.18 : x
  2. Step 2: Convert to fraction form
    39,140.18/58,720 = 11,438.18/x
  3. Step 3: Cross multiply
    39,140.18x = 58,720 × 11,438.18
  4. Step 4: Simplify right side
    39,140.18x = 671,649,929.60
  5. Step 5: Solve for x
    x = 671,649,929.60/39,140.18
  6. Step 6: Final answer
    x = 17,160.11

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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.