Home / 39,640.18-59,458.71-12,988.17

Finding the Fourth Proportional to 39,640.18, 59,458.71 and 12,988.17

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Solution

The fourth proportional to 39,640.18, 59,458.71 and 12,988.17 is: 19,481.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,640.18 : 59,458.71 = 12,988.17 : x
  2. Step 2: Convert to fraction form
    39,640.18/59,458.71 = 12,988.17/x
  3. Step 3: Cross multiply
    39,640.18x = 59,458.71 × 12,988.17
  4. Step 4: Simplify right side
    39,640.18x = 772,259,882.17
  5. Step 5: Solve for x
    x = 772,259,882.17/39,640.18
  6. Step 6: Final answer
    x = 19,481.74

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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.