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Finding the Fourth Proportional to 38,702.40, 58,019.04 and 15,312.84

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Solution

The fourth proportional to 38,702.40, 58,019.04 and 15,312.84 is: 22,955.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,702.40 : 58,019.04 = 15,312.84 : x
  2. Step 2: Convert to fraction form
    38,702.40/58,019.04 = 15,312.84/x
  3. Step 3: Cross multiply
    38,702.40x = 58,019.04 × 15,312.84
  4. Step 4: Simplify right side
    38,702.40x = 888,436,276.47
  5. Step 5: Solve for x
    x = 888,436,276.47/38,702.40
  6. Step 6: Final answer
    x = 22,955.59

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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.