Home / 15,225.66-21,004.68-8,935.20

Finding the Fourth Proportional to 15,225.66, 21,004.68 and 8,935.20

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Solution

The fourth proportional to 15,225.66, 21,004.68 and 8,935.20 is: 12,326.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.66 : 21,004.68 = 8,935.20 : x
  2. Step 2: Convert to fraction form
    15,225.66/21,004.68 = 8,935.20/x
  3. Step 3: Cross multiply
    15,225.66x = 21,004.68 × 8,935.20
  4. Step 4: Simplify right side
    15,225.66x = 187,681,016.74
  5. Step 5: Solve for x
    x = 187,681,016.74/15,225.66
  6. Step 6: Final answer
    x = 12,326.63

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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.