Home / 38,088.06-57,132.18-13,128.72

Finding the Fourth Proportional to 38,088.06, 57,132.18 and 13,128.72

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Solution

The fourth proportional to 38,088.06, 57,132.18 and 13,128.72 is: 19,693.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,088.06 : 57,132.18 = 13,128.72 : x
  2. Step 2: Convert to fraction form
    38,088.06/57,132.18 = 13,128.72/x
  3. Step 3: Cross multiply
    38,088.06x = 57,132.18 × 13,128.72
  4. Step 4: Simplify right side
    38,088.06x = 750,072,394.21
  5. Step 5: Solve for x
    x = 750,072,394.21/38,088.06
  6. Step 6: Final answer
    x = 19,693.11

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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.