Home / 15,145.43-20,901.68-9,177.66

Finding the Fourth Proportional to 15,145.43, 20,901.68 and 9,177.66

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Solution

The fourth proportional to 15,145.43, 20,901.68 and 9,177.66 is: 12,665.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.43 : 20,901.68 = 9,177.66 : x
  2. Step 2: Convert to fraction form
    15,145.43/20,901.68 = 9,177.66/x
  3. Step 3: Cross multiply
    15,145.43x = 20,901.68 × 9,177.66
  4. Step 4: Simplify right side
    15,145.43x = 191,828,466.58
  5. Step 5: Solve for x
    x = 191,828,466.58/15,145.43
  6. Step 6: Final answer
    x = 12,665.77

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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.