Home / 15,385.42-21,233.91-8,672.50

Finding the Fourth Proportional to 15,385.42, 21,233.91 and 8,672.50

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Solution

The fourth proportional to 15,385.42, 21,233.91 and 8,672.50 is: 11,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.42 : 21,233.91 = 8,672.50 : x
  2. Step 2: Convert to fraction form
    15,385.42/21,233.91 = 8,672.50/x
  3. Step 3: Cross multiply
    15,385.42x = 21,233.91 × 8,672.50
  4. Step 4: Simplify right side
    15,385.42x = 184,151,084.48
  5. Step 5: Solve for x
    x = 184,151,084.48/15,385.42
  6. Step 6: Final answer
    x = 11,969.19

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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.