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Finding the Fourth Proportional to 19,903.64, 29,799.30 and 10,522.40

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Solution

The fourth proportional to 19,903.64, 29,799.30 and 10,522.40 is: 15,753.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.64 : 29,799.30 = 10,522.40 : x
  2. Step 2: Convert to fraction form
    19,903.64/29,799.30 = 10,522.40/x
  3. Step 3: Cross multiply
    19,903.64x = 29,799.30 × 10,522.40
  4. Step 4: Simplify right side
    19,903.64x = 313,560,154.32
  5. Step 5: Solve for x
    x = 313,560,154.32/19,903.64
  6. Step 6: Final answer
    x = 15,753.91

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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.