Home / 28,379.47-42,574.79-11,730.55

Finding the Fourth Proportional to 28,379.47, 42,574.79 and 11,730.55

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Solution

The fourth proportional to 28,379.47, 42,574.79 and 11,730.55 is: 17,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.47 : 42,574.79 = 11,730.55 : x
  2. Step 2: Convert to fraction form
    28,379.47/42,574.79 = 11,730.55/x
  3. Step 3: Cross multiply
    28,379.47x = 42,574.79 × 11,730.55
  4. Step 4: Simplify right side
    28,379.47x = 499,425,702.83
  5. Step 5: Solve for x
    x = 499,425,702.83/28,379.47
  6. Step 6: Final answer
    x = 17,598.13

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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.