Home / 15,615.74-21,549.50-8,542.08

Finding the Fourth Proportional to 15,615.74, 21,549.50 and 8,542.08

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Solution

The fourth proportional to 15,615.74, 21,549.50 and 8,542.08 is: 11,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.74 : 21,549.50 = 8,542.08 : x
  2. Step 2: Convert to fraction form
    15,615.74/21,549.50 = 8,542.08/x
  3. Step 3: Cross multiply
    15,615.74x = 21,549.50 × 8,542.08
  4. Step 4: Simplify right side
    15,615.74x = 184,077,552.96
  5. Step 5: Solve for x
    x = 184,077,552.96/15,615.74
  6. Step 6: Final answer
    x = 11,787.95

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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.