Home / 15,531.50-21,433.26-8,457.92

Finding the Fourth Proportional to 15,531.50, 21,433.26 and 8,457.92

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Solution

The fourth proportional to 15,531.50, 21,433.26 and 8,457.92 is: 11,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.50 : 21,433.26 = 8,457.92 : x
  2. Step 2: Convert to fraction form
    15,531.50/21,433.26 = 8,457.92/x
  3. Step 3: Cross multiply
    15,531.50x = 21,433.26 × 8,457.92
  4. Step 4: Simplify right side
    15,531.50x = 181,280,798.42
  5. Step 5: Solve for x
    x = 181,280,798.42/15,531.50
  6. Step 6: Final answer
    x = 11,671.82

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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.