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Finding the Fourth Proportional to 19,398.80, 29,043.98 and 10,482.20

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Solution

The fourth proportional to 19,398.80, 29,043.98 and 10,482.20 is: 15,694.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.80 : 29,043.98 = 10,482.20 : x
  2. Step 2: Convert to fraction form
    19,398.80/29,043.98 = 10,482.20/x
  3. Step 3: Cross multiply
    19,398.80x = 29,043.98 × 10,482.20
  4. Step 4: Simplify right side
    19,398.80x = 304,444,807.16
  5. Step 5: Solve for x
    x = 304,444,807.16/19,398.80
  6. Step 6: Final answer
    x = 15,694.00

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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.