Home / 28,143.26-38,837.68-15,569.90

Finding the Fourth Proportional to 28,143.26, 38,837.68 and 15,569.90

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Solution

The fourth proportional to 28,143.26, 38,837.68 and 15,569.90 is: 21,486.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.26 : 38,837.68 = 15,569.90 : x
  2. Step 2: Convert to fraction form
    28,143.26/38,837.68 = 15,569.90/x
  3. Step 3: Cross multiply
    28,143.26x = 38,837.68 × 15,569.90
  4. Step 4: Simplify right side
    28,143.26x = 604,698,793.83
  5. Step 5: Solve for x
    x = 604,698,793.83/28,143.26
  6. Step 6: Final answer
    x = 21,486.45

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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.