Home / 28,320.93-42,486.46-11,671.88

Finding the Fourth Proportional to 28,320.93, 42,486.46 and 11,671.88

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Solution

The fourth proportional to 28,320.93, 42,486.46 and 11,671.88 is: 17,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.93 : 42,486.46 = 11,671.88 : x
  2. Step 2: Convert to fraction form
    28,320.93/42,486.46 = 11,671.88/x
  3. Step 3: Cross multiply
    28,320.93x = 42,486.46 × 11,671.88
  4. Step 4: Simplify right side
    28,320.93x = 495,896,621.13
  5. Step 5: Solve for x
    x = 495,896,621.13/28,320.93
  6. Step 6: Final answer
    x = 17,509.90

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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.