Home / 28,066.40-38,731.04-15,319.83

Finding the Fourth Proportional to 28,066.40, 38,731.04 and 15,319.83

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Solution

The fourth proportional to 28,066.40, 38,731.04 and 15,319.83 is: 21,141.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.40 : 38,731.04 = 15,319.83 : x
  2. Step 2: Convert to fraction form
    28,066.40/38,731.04 = 15,319.83/x
  3. Step 3: Cross multiply
    28,066.40x = 38,731.04 × 15,319.83
  4. Step 4: Simplify right side
    28,066.40x = 593,352,948.52
  5. Step 5: Solve for x
    x = 593,352,948.52/28,066.40
  6. Step 6: Final answer
    x = 21,141.05

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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.