Home / 52,290.31-78,434.78-12,847.76

Finding the Fourth Proportional to 52,290.31, 78,434.78 and 12,847.76

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Solution

The fourth proportional to 52,290.31, 78,434.78 and 12,847.76 is: 19,271.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,290.31 : 78,434.78 = 12,847.76 : x
  2. Step 2: Convert to fraction form
    52,290.31/78,434.78 = 12,847.76/x
  3. Step 3: Cross multiply
    52,290.31x = 78,434.78 × 12,847.76
  4. Step 4: Simplify right side
    52,290.31x = 1,007,711,229.09
  5. Step 5: Solve for x
    x = 1,007,711,229.09/52,290.31
  6. Step 6: Final answer
    x = 19,271.47

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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.