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Finding the Fourth Proportional to 20,053.76, 27,669.12 and 15,077.12

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Solution

The fourth proportional to 20,053.76, 27,669.12 and 15,077.12 is: 20,802.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.76 : 27,669.12 = 15,077.12 : x
  2. Step 2: Convert to fraction form
    20,053.76/27,669.12 = 15,077.12/x
  3. Step 3: Cross multiply
    20,053.76x = 27,669.12 × 15,077.12
  4. Step 4: Simplify right side
    20,053.76x = 417,170,642.53
  5. Step 5: Solve for x
    x = 417,170,642.53/20,053.76
  6. Step 6: Final answer
    x = 20,802.61

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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.