Home / 31,419.36-47,147.40-11,711.52

Finding the Fourth Proportional to 31,419.36, 47,147.40 and 11,711.52

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Solution

The fourth proportional to 31,419.36, 47,147.40 and 11,711.52 is: 17,574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,419.36 : 47,147.40 = 11,711.52 : x
  2. Step 2: Convert to fraction form
    31,419.36/47,147.40 = 11,711.52/x
  3. Step 3: Cross multiply
    31,419.36x = 47,147.40 × 11,711.52
  4. Step 4: Simplify right side
    31,419.36x = 552,167,718.05
  5. Step 5: Solve for x
    x = 552,167,718.05/31,419.36
  6. Step 6: Final answer
    x = 17,574.12

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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.