Home / 19,805.40-29,725.80-10,451.52

Finding the Fourth Proportional to 19,805.40, 29,725.80 and 10,451.52

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Solution

The fourth proportional to 19,805.40, 29,725.80 and 10,451.52 is: 15,686.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.40 : 29,725.80 = 10,451.52 : x
  2. Step 2: Convert to fraction form
    19,805.40/29,725.80 = 10,451.52/x
  3. Step 3: Cross multiply
    19,805.40x = 29,725.80 × 10,451.52
  4. Step 4: Simplify right side
    19,805.40x = 310,679,793.22
  5. Step 5: Solve for x
    x = 310,679,793.22/19,805.40
  6. Step 6: Final answer
    x = 15,686.62

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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.