Home / 31,639.82-47,464.86-11,920.10

Finding the Fourth Proportional to 31,639.82, 47,464.86 and 11,920.10

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Solution

The fourth proportional to 31,639.82, 47,464.86 and 11,920.10 is: 17,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.82 : 47,464.86 = 11,920.10 : x
  2. Step 2: Convert to fraction form
    31,639.82/47,464.86 = 11,920.10/x
  3. Step 3: Cross multiply
    31,639.82x = 47,464.86 × 11,920.10
  4. Step 4: Simplify right side
    31,639.82x = 565,785,877.69
  5. Step 5: Solve for x
    x = 565,785,877.69/31,639.82
  6. Step 6: Final answer
    x = 17,882.08

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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.