Home / 28,651.19-42,979.15-8,929.74

Finding the Fourth Proportional to 28,651.19, 42,979.15 and 8,929.74

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Solution

The fourth proportional to 28,651.19, 42,979.15 and 8,929.74 is: 13,395.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.19 : 42,979.15 = 8,929.74 : x
  2. Step 2: Convert to fraction form
    28,651.19/42,979.15 = 8,929.74/x
  3. Step 3: Cross multiply
    28,651.19x = 42,979.15 × 8,929.74
  4. Step 4: Simplify right side
    28,651.19x = 383,792,807.25
  5. Step 5: Solve for x
    x = 383,792,807.25/28,651.19
  6. Step 6: Final answer
    x = 13,395.35

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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.