Home / 28,023.48-38,672.88-15,448.20

Finding the Fourth Proportional to 28,023.48, 38,672.88 and 15,448.20

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Solution

The fourth proportional to 28,023.48, 38,672.88 and 15,448.20 is: 21,318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,023.48 : 38,672.88 = 15,448.20 : x
  2. Step 2: Convert to fraction form
    28,023.48/38,672.88 = 15,448.20/x
  3. Step 3: Cross multiply
    28,023.48x = 38,672.88 × 15,448.20
  4. Step 4: Simplify right side
    28,023.48x = 597,426,384.82
  5. Step 5: Solve for x
    x = 597,426,384.82/28,023.48
  6. Step 6: Final answer
    x = 21,318.78

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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.