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Finding the Fourth Proportional to 15,007.62, 20,719.20 and 13,346.70

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Solution

The fourth proportional to 15,007.62, 20,719.20 and 13,346.70 is: 18,426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.62 : 20,719.20 = 13,346.70 : x
  2. Step 2: Convert to fraction form
    15,007.62/20,719.20 = 13,346.70/x
  3. Step 3: Cross multiply
    15,007.62x = 20,719.20 × 13,346.70
  4. Step 4: Simplify right side
    15,007.62x = 276,532,946.64
  5. Step 5: Solve for x
    x = 276,532,946.64/15,007.62
  6. Step 6: Final answer
    x = 18,426.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.