Home / 20,530.52-28,332.13-11,099.08

Finding the Fourth Proportional to 20,530.52, 28,332.13 and 11,099.08

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Solution

The fourth proportional to 20,530.52, 28,332.13 and 11,099.08 is: 15,316.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.52 : 28,332.13 = 11,099.08 : x
  2. Step 2: Convert to fraction form
    20,530.52/28,332.13 = 11,099.08/x
  3. Step 3: Cross multiply
    20,530.52x = 28,332.13 × 11,099.08
  4. Step 4: Simplify right side
    20,530.52x = 314,460,521.95
  5. Step 5: Solve for x
    x = 314,460,521.95/20,530.52
  6. Step 6: Final answer
    x = 15,316.73

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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.