Home / 15,989.70-22,061.45-9,090.77

Finding the Fourth Proportional to 15,989.70, 22,061.45 and 9,090.77

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Solution

The fourth proportional to 15,989.70, 22,061.45 and 9,090.77 is: 12,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.70 : 22,061.45 = 9,090.77 : x
  2. Step 2: Convert to fraction form
    15,989.70/22,061.45 = 9,090.77/x
  3. Step 3: Cross multiply
    15,989.70x = 22,061.45 × 9,090.77
  4. Step 4: Simplify right side
    15,989.70x = 200,555,567.82
  5. Step 5: Solve for x
    x = 200,555,567.82/15,989.70
  6. Step 6: Final answer
    x = 12,542.80

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Double scale
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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.