Home / 28,145.12-38,838.66-15,569

Finding the Fourth Proportional to 28,145.12, 38,838.66 and 15,569

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Solution

The fourth proportional to 28,145.12, 38,838.66 and 15,569 is: 21,484.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.12 : 38,838.66 = 15,569 : x
  2. Step 2: Convert to fraction form
    28,145.12/38,838.66 = 15,569/x
  3. Step 3: Cross multiply
    28,145.12x = 38,838.66 × 15,569
  4. Step 4: Simplify right side
    28,145.12x = 604,679,097.54
  5. Step 5: Solve for x
    x = 604,679,097.54/28,145.12
  6. Step 6: Final answer
    x = 21,484.33

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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.