Home / 28,652.19-42,980.65-8,930.74

Finding the Fourth Proportional to 28,652.19, 42,980.65 and 8,930.74

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Solution

The fourth proportional to 28,652.19, 42,980.65 and 8,930.74 is: 13,396.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,652.19 : 42,980.65 = 8,930.74 : x
  2. Step 2: Convert to fraction form
    28,652.19/42,980.65 = 8,930.74/x
  3. Step 3: Cross multiply
    28,652.19x = 42,980.65 × 8,930.74
  4. Step 4: Simplify right side
    28,652.19x = 383,849,010.18
  5. Step 5: Solve for x
    x = 383,849,010.18/28,652.19
  6. Step 6: Final answer
    x = 13,396.85

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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.