Home / 15,281.40-21,089.19-8,569.19

Finding the Fourth Proportional to 15,281.40, 21,089.19 and 8,569.19

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Solution

The fourth proportional to 15,281.40, 21,089.19 and 8,569.19 is: 11,825.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.40 : 21,089.19 = 8,569.19 : x
  2. Step 2: Convert to fraction form
    15,281.40/21,089.19 = 8,569.19/x
  3. Step 3: Cross multiply
    15,281.40x = 21,089.19 × 8,569.19
  4. Step 4: Simplify right side
    15,281.40x = 180,717,170.61
  5. Step 5: Solve for x
    x = 180,717,170.61/15,281.40
  6. Step 6: Final answer
    x = 11,825.96

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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.