Home / 15,501.49-21,391.10-8,695.13

Finding the Fourth Proportional to 15,501.49, 21,391.10 and 8,695.13

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Solution

The fourth proportional to 15,501.49, 21,391.10 and 8,695.13 is: 11,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.49 : 21,391.10 = 8,695.13 : x
  2. Step 2: Convert to fraction form
    15,501.49/21,391.10 = 8,695.13/x
  3. Step 3: Cross multiply
    15,501.49x = 21,391.10 × 8,695.13
  4. Step 4: Simplify right side
    15,501.49x = 185,998,405.35
  5. Step 5: Solve for x
    x = 185,998,405.35/15,501.49
  6. Step 6: Final answer
    x = 11,998.75

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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.