Home / 28,345.91-42,454.06-13,565.21

Finding the Fourth Proportional to 28,345.91, 42,454.06 and 13,565.21

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Solution

The fourth proportional to 28,345.91, 42,454.06 and 13,565.21 is: 20,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.91 : 42,454.06 = 13,565.21 : x
  2. Step 2: Convert to fraction form
    28,345.91/42,454.06 = 13,565.21/x
  3. Step 3: Cross multiply
    28,345.91x = 42,454.06 × 13,565.21
  4. Step 4: Simplify right side
    28,345.91x = 575,898,239.25
  5. Step 5: Solve for x
    x = 575,898,239.25/28,345.91
  6. Step 6: Final answer
    x = 20,316.80

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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.