Home / 15,618.60-21,553.72-8,545

Finding the Fourth Proportional to 15,618.60, 21,553.72 and 8,545

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Solution

The fourth proportional to 15,618.60, 21,553.72 and 8,545 is: 11,792.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.60 : 21,553.72 = 8,545 : x
  2. Step 2: Convert to fraction form
    15,618.60/21,553.72 = 8,545/x
  3. Step 3: Cross multiply
    15,618.60x = 21,553.72 × 8,545
  4. Step 4: Simplify right side
    15,618.60x = 184,176,537.40
  5. Step 5: Solve for x
    x = 184,176,537.40/15,618.60
  6. Step 6: Final answer
    x = 11,792.13

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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.