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Finding the Fourth Proportional to 15,602.40, 23,402.40 and 7,279.92

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Solution

The fourth proportional to 15,602.40, 23,402.40 and 7,279.92 is: 10,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.40 : 23,402.40 = 7,279.92 : x
  2. Step 2: Convert to fraction form
    15,602.40/23,402.40 = 7,279.92/x
  3. Step 3: Cross multiply
    15,602.40x = 23,402.40 × 7,279.92
  4. Step 4: Simplify right side
    15,602.40x = 170,367,599.81
  5. Step 5: Solve for x
    x = 170,367,599.81/15,602.40
  6. Step 6: Final answer
    x = 10,919.32

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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.