Home / 20,456.58-28,232.76-15,166.46

Finding the Fourth Proportional to 20,456.58, 28,232.76 and 15,166.46

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Solution

The fourth proportional to 20,456.58, 28,232.76 and 15,166.46 is: 20,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.58 : 28,232.76 = 15,166.46 : x
  2. Step 2: Convert to fraction form
    20,456.58/28,232.76 = 15,166.46/x
  3. Step 3: Cross multiply
    20,456.58x = 28,232.76 × 15,166.46
  4. Step 4: Simplify right side
    20,456.58x = 428,191,025.23
  5. Step 5: Solve for x
    x = 428,191,025.23/20,456.58
  6. Step 6: Final answer
    x = 20,931.70

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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.