Home / 15,506.70-21,402.33-9,217.86

Finding the Fourth Proportional to 15,506.70, 21,402.33 and 9,217.86

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Solution

The fourth proportional to 15,506.70, 21,402.33 and 9,217.86 is: 12,722.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.70 : 21,402.33 = 9,217.86 : x
  2. Step 2: Convert to fraction form
    15,506.70/21,402.33 = 9,217.86/x
  3. Step 3: Cross multiply
    15,506.70x = 21,402.33 × 9,217.86
  4. Step 4: Simplify right side
    15,506.70x = 197,283,681.61
  5. Step 5: Solve for x
    x = 197,283,681.61/15,506.70
  6. Step 6: Final answer
    x = 12,722.48

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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.