Home / 10,419.39-14,378.19-5,702.76

Finding the Fourth Proportional to 10,419.39, 14,378.19 and 5,702.76

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Solution

The fourth proportional to 10,419.39, 14,378.19 and 5,702.76 is: 7,869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.39 : 14,378.19 = 5,702.76 : x
  2. Step 2: Convert to fraction form
    10,419.39/14,378.19 = 5,702.76/x
  3. Step 3: Cross multiply
    10,419.39x = 14,378.19 × 5,702.76
  4. Step 4: Simplify right side
    10,419.39x = 81,995,366.80
  5. Step 5: Solve for x
    x = 81,995,366.80/10,419.39
  6. Step 6: Final answer
    x = 7,869.50

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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.