Home / 28,585.62-39,438.96-18,521.76

Finding the Fourth Proportional to 28,585.62, 39,438.96 and 18,521.76

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Solution

The fourth proportional to 28,585.62, 39,438.96 and 18,521.76 is: 25,554.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.62 : 39,438.96 = 18,521.76 : x
  2. Step 2: Convert to fraction form
    28,585.62/39,438.96 = 18,521.76/x
  3. Step 3: Cross multiply
    28,585.62x = 39,438.96 × 18,521.76
  4. Step 4: Simplify right side
    28,585.62x = 730,478,951.77
  5. Step 5: Solve for x
    x = 730,478,951.77/28,585.62
  6. Step 6: Final answer
    x = 25,554.07

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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.