Home / 28,531.91-42,802.65-9,811.19

Finding the Fourth Proportional to 28,531.91, 42,802.65 and 9,811.19

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Solution

The fourth proportional to 28,531.91, 42,802.65 and 9,811.19 is: 14,718.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.91 : 42,802.65 = 9,811.19 : x
  2. Step 2: Convert to fraction form
    28,531.91/42,802.65 = 9,811.19/x
  3. Step 3: Cross multiply
    28,531.91x = 42,802.65 × 9,811.19
  4. Step 4: Simplify right side
    28,531.91x = 419,945,038.66
  5. Step 5: Solve for x
    x = 419,945,038.66/28,531.91
  6. Step 6: Final answer
    x = 14,718.43

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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.