Home / 15,553.45-21,461.27-8,747.45

Finding the Fourth Proportional to 15,553.45, 21,461.27 and 8,747.45

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Solution

The fourth proportional to 15,553.45, 21,461.27 and 8,747.45 is: 12,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.45 : 21,461.27 = 8,747.45 : x
  2. Step 2: Convert to fraction form
    15,553.45/21,461.27 = 8,747.45/x
  3. Step 3: Cross multiply
    15,553.45x = 21,461.27 × 8,747.45
  4. Step 4: Simplify right side
    15,553.45x = 187,731,400.66
  5. Step 5: Solve for x
    x = 187,731,400.66/15,553.45
  6. Step 6: Final answer
    x = 12,070.08

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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.