Home / 15,841.55-21,866.80-9,129.85

Finding the Fourth Proportional to 15,841.55, 21,866.80 and 9,129.85

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Solution

The fourth proportional to 15,841.55, 21,866.80 and 9,129.85 is: 12,602.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.55 : 21,866.80 = 9,129.85 : x
  2. Step 2: Convert to fraction form
    15,841.55/21,866.80 = 9,129.85/x
  3. Step 3: Cross multiply
    15,841.55x = 21,866.80 × 9,129.85
  4. Step 4: Simplify right side
    15,841.55x = 199,640,526.49
  5. Step 5: Solve for x
    x = 199,640,526.49/15,841.55
  6. Step 6: Final answer
    x = 12,602.34

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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.