Home / 15,217.06-21,000.09-8,931.46

Finding the Fourth Proportional to 15,217.06, 21,000.09 and 8,931.46

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Solution

The fourth proportional to 15,217.06, 21,000.09 and 8,931.46 is: 12,325.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217.06 : 21,000.09 = 8,931.46 : x
  2. Step 2: Convert to fraction form
    15,217.06/21,000.09 = 8,931.46/x
  3. Step 3: Cross multiply
    15,217.06x = 21,000.09 × 8,931.46
  4. Step 4: Simplify right side
    15,217.06x = 187,561,463.83
  5. Step 5: Solve for x
    x = 187,561,463.83/15,217.06
  6. Step 6: Final answer
    x = 12,325.74

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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.