Home / 12,256.30-18,384.45-10,215.10

Finding the Fourth Proportional to 12,256.30, 18,384.45 and 10,215.10

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Solution

The fourth proportional to 12,256.30, 18,384.45 and 10,215.10 is: 15,322.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.30 : 18,384.45 = 10,215.10 : x
  2. Step 2: Convert to fraction form
    12,256.30/18,384.45 = 10,215.10/x
  3. Step 3: Cross multiply
    12,256.30x = 18,384.45 × 10,215.10
  4. Step 4: Simplify right side
    12,256.30x = 187,798,995.20
  5. Step 5: Solve for x
    x = 187,798,995.20/12,256.30
  6. Step 6: Final answer
    x = 15,322.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.