Home / 13,298.55-19,951.28-4,979.21

Finding the Fourth Proportional to 13,298.55, 19,951.28 and 4,979.21

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Solution

The fourth proportional to 13,298.55, 19,951.28 and 4,979.21 is: 7,470.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.55 : 19,951.28 = 4,979.21 : x
  2. Step 2: Convert to fraction form
    13,298.55/19,951.28 = 4,979.21/x
  3. Step 3: Cross multiply
    13,298.55x = 19,951.28 × 4,979.21
  4. Step 4: Simplify right side
    13,298.55x = 99,341,612.89
  5. Step 5: Solve for x
    x = 99,341,612.89/13,298.55
  6. Step 6: Final answer
    x = 7,470.11

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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.