Home / 31,443.52-47,164.64-12,718.40

Finding the Fourth Proportional to 31,443.52, 47,164.64 and 12,718.40

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Solution

The fourth proportional to 31,443.52, 47,164.64 and 12,718.40 is: 19,077.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,443.52 : 47,164.64 = 12,718.40 : x
  2. Step 2: Convert to fraction form
    31,443.52/47,164.64 = 12,718.40/x
  3. Step 3: Cross multiply
    31,443.52x = 47,164.64 × 12,718.40
  4. Step 4: Simplify right side
    31,443.52x = 599,858,757.38
  5. Step 5: Solve for x
    x = 599,858,757.38/31,443.52
  6. Step 6: Final answer
    x = 19,077.34

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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.