Home / 15,618.80-21,554.10-8,545.52

Finding the Fourth Proportional to 15,618.80, 21,554.10 and 8,545.52

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Solution

The fourth proportional to 15,618.80, 21,554.10 and 8,545.52 is: 11,792.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.80 : 21,554.10 = 8,545.52 : x
  2. Step 2: Convert to fraction form
    15,618.80/21,554.10 = 8,545.52/x
  3. Step 3: Cross multiply
    15,618.80x = 21,554.10 × 8,545.52
  4. Step 4: Simplify right side
    15,618.80x = 184,190,992.63
  5. Step 5: Solve for x
    x = 184,190,992.63/15,618.80
  6. Step 6: Final answer
    x = 11,792.90

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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.