Home / 28,565.57-42,857.91-13,772.75

Finding the Fourth Proportional to 28,565.57, 42,857.91 and 13,772.75

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Solution

The fourth proportional to 28,565.57, 42,857.91 and 13,772.75 is: 20,663.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.57 : 42,857.91 = 13,772.75 : x
  2. Step 2: Convert to fraction form
    28,565.57/42,857.91 = 13,772.75/x
  3. Step 3: Cross multiply
    28,565.57x = 42,857.91 × 13,772.75
  4. Step 4: Simplify right side
    28,565.57x = 590,271,065.66
  5. Step 5: Solve for x
    x = 590,271,065.66/28,565.57
  6. Step 6: Final answer
    x = 20,663.72

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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.