Home / 21,298.74-31,948.12-9,598.28

Finding the Fourth Proportional to 21,298.74, 31,948.12 and 9,598.28

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Solution

The fourth proportional to 21,298.74, 31,948.12 and 9,598.28 is: 14,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.74 : 31,948.12 = 9,598.28 : x
  2. Step 2: Convert to fraction form
    21,298.74/31,948.12 = 9,598.28/x
  3. Step 3: Cross multiply
    21,298.74x = 31,948.12 × 9,598.28
  4. Step 4: Simplify right side
    21,298.74x = 306,647,001.23
  5. Step 5: Solve for x
    x = 306,647,001.23/21,298.74
  6. Step 6: Final answer
    x = 14,397.42

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Double scale
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Similar ratio
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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.