Home / 9,428.81-13,011.12-5,179.04

Finding the Fourth Proportional to 9,428.81, 13,011.12 and 5,179.04

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Solution

The fourth proportional to 9,428.81, 13,011.12 and 5,179.04 is: 7,146.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.81 : 13,011.12 = 5,179.04 : x
  2. Step 2: Convert to fraction form
    9,428.81/13,011.12 = 5,179.04/x
  3. Step 3: Cross multiply
    9,428.81x = 13,011.12 × 5,179.04
  4. Step 4: Simplify right side
    9,428.81x = 67,385,045.87
  5. Step 5: Solve for x
    x = 67,385,045.87/9,428.81
  6. Step 6: Final answer
    x = 7,146.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.