Home / 28,117.62-42,143.40-15,634.62

Finding the Fourth Proportional to 28,117.62, 42,143.40 and 15,634.62

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Solution

The fourth proportional to 28,117.62, 42,143.40 and 15,634.62 is: 23,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.62 : 42,143.40 = 15,634.62 : x
  2. Step 2: Convert to fraction form
    28,117.62/42,143.40 = 15,634.62/x
  3. Step 3: Cross multiply
    28,117.62x = 42,143.40 × 15,634.62
  4. Step 4: Simplify right side
    28,117.62x = 658,896,044.51
  5. Step 5: Solve for x
    x = 658,896,044.51/28,117.62
  6. Step 6: Final answer
    x = 23,433.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.