Home / 15,694.56-21,660.36-8,981.16

Finding the Fourth Proportional to 15,694.56, 21,660.36 and 8,981.16

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Solution

The fourth proportional to 15,694.56, 21,660.36 and 8,981.16 is: 12,395.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.56 : 21,660.36 = 8,981.16 : x
  2. Step 2: Convert to fraction form
    15,694.56/21,660.36 = 8,981.16/x
  3. Step 3: Cross multiply
    15,694.56x = 21,660.36 × 8,981.16
  4. Step 4: Simplify right side
    15,694.56x = 194,535,158.82
  5. Step 5: Solve for x
    x = 194,535,158.82/15,694.56
  6. Step 6: Final answer
    x = 12,395.07

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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.