Home / 31,428.83-47,143.25-9,242.21

Finding the Fourth Proportional to 31,428.83, 47,143.25 and 9,242.21

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Solution

The fourth proportional to 31,428.83, 47,143.25 and 9,242.21 is: 13,863.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.83 : 47,143.25 = 9,242.21 : x
  2. Step 2: Convert to fraction form
    31,428.83/47,143.25 = 9,242.21/x
  3. Step 3: Cross multiply
    31,428.83x = 47,143.25 × 9,242.21
  4. Step 4: Simplify right side
    31,428.83x = 435,707,816.58
  5. Step 5: Solve for x
    x = 435,707,816.58/31,428.83
  6. Step 6: Final answer
    x = 13,863.32

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1.5x scale

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.