Home / 28,977.04-43,432.40-12,312.64

Finding the Fourth Proportional to 28,977.04, 43,432.40 and 12,312.64

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Solution

The fourth proportional to 28,977.04, 43,432.40 and 12,312.64 is: 18,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.04 : 43,432.40 = 12,312.64 : x
  2. Step 2: Convert to fraction form
    28,977.04/43,432.40 = 12,312.64/x
  3. Step 3: Cross multiply
    28,977.04x = 43,432.40 × 12,312.64
  4. Step 4: Simplify right side
    28,977.04x = 534,767,505.54
  5. Step 5: Solve for x
    x = 534,767,505.54/28,977.04
  6. Step 6: Final answer
    x = 18,454.87

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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.