Home / 20,726.64-28,602.70-11,295.20

Finding the Fourth Proportional to 20,726.64, 28,602.70 and 11,295.20

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Solution

The fourth proportional to 20,726.64, 28,602.70 and 11,295.20 is: 15,587.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.64 : 28,602.70 = 11,295.20 : x
  2. Step 2: Convert to fraction form
    20,726.64/28,602.70 = 11,295.20/x
  3. Step 3: Cross multiply
    20,726.64x = 28,602.70 × 11,295.20
  4. Step 4: Simplify right side
    20,726.64x = 323,073,217.04
  5. Step 5: Solve for x
    x = 323,073,217.04/20,726.64
  6. Step 6: Final answer
    x = 15,587.34

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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.