Home / 15,756.59-21,734.46-9,378.92

Finding the Fourth Proportional to 15,756.59, 21,734.46 and 9,378.92

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Solution

The fourth proportional to 15,756.59, 21,734.46 and 9,378.92 is: 12,937.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.59 : 21,734.46 = 9,378.92 : x
  2. Step 2: Convert to fraction form
    15,756.59/21,734.46 = 9,378.92/x
  3. Step 3: Cross multiply
    15,756.59x = 21,734.46 × 9,378.92
  4. Step 4: Simplify right side
    15,756.59x = 203,845,815.92
  5. Step 5: Solve for x
    x = 203,845,815.92/15,756.59
  6. Step 6: Final answer
    x = 12,937.18

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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.