Home / 28,539.13-42,807.69-7,479.00

Finding the Fourth Proportional to 28,539.13, 42,807.69 and 7,479.00

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Solution

The fourth proportional to 28,539.13, 42,807.69 and 7,479.00 is: 11,218.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.13 : 42,807.69 = 7,479.00 : x
  2. Step 2: Convert to fraction form
    28,539.13/42,807.69 = 7,479.00/x
  3. Step 3: Cross multiply
    28,539.13x = 42,807.69 × 7,479.00
  4. Step 4: Simplify right side
    28,539.13x = 320,158,874.04
  5. Step 5: Solve for x
    x = 320,158,874.04/28,539.13
  6. Step 6: Final answer
    x = 11,218.24

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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.