Home / 15,449.76-21,320.63-8,376.18

Finding the Fourth Proportional to 15,449.76, 21,320.63 and 8,376.18

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Solution

The fourth proportional to 15,449.76, 21,320.63 and 8,376.18 is: 11,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.76 : 21,320.63 = 8,376.18 : x
  2. Step 2: Convert to fraction form
    15,449.76/21,320.63 = 8,376.18/x
  3. Step 3: Cross multiply
    15,449.76x = 21,320.63 × 8,376.18
  4. Step 4: Simplify right side
    15,449.76x = 178,585,392.71
  5. Step 5: Solve for x
    x = 178,585,392.71/15,449.76
  6. Step 6: Final answer
    x = 11,559.10

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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.