Home / 34,691.40-47,865.78-20,547.72

Finding the Fourth Proportional to 34,691.40, 47,865.78 and 20,547.72

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Solution

The fourth proportional to 34,691.40, 47,865.78 and 20,547.72 is: 28,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,691.40 : 47,865.78 = 20,547.72 : x
  2. Step 2: Convert to fraction form
    34,691.40/47,865.78 = 20,547.72/x
  3. Step 3: Cross multiply
    34,691.40x = 47,865.78 × 20,547.72
  4. Step 4: Simplify right side
    34,691.40x = 983,532,645.02
  5. Step 5: Solve for x
    x = 983,532,645.02/34,691.40
  6. Step 6: Final answer
    x = 28,350.91

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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.