Home / 15,695.32-21,660.12-8,621.68

Finding the Fourth Proportional to 15,695.32, 21,660.12 and 8,621.68

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Solution

The fourth proportional to 15,695.32, 21,660.12 and 8,621.68 is: 11,898.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.32 : 21,660.12 = 8,621.68 : x
  2. Step 2: Convert to fraction form
    15,695.32/21,660.12 = 8,621.68/x
  3. Step 3: Cross multiply
    15,695.32x = 21,660.12 × 8,621.68
  4. Step 4: Simplify right side
    15,695.32x = 186,746,623.40
  5. Step 5: Solve for x
    x = 186,746,623.40/15,695.32
  6. Step 6: Final answer
    x = 11,898.24

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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.