Home / 15,680.70-21,639.30-8,607.24

Finding the Fourth Proportional to 15,680.70, 21,639.30 and 8,607.24

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Solution

The fourth proportional to 15,680.70, 21,639.30 and 8,607.24 is: 11,877.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.70 : 21,639.30 = 8,607.24 : x
  2. Step 2: Convert to fraction form
    15,680.70/21,639.30 = 8,607.24/x
  3. Step 3: Cross multiply
    15,680.70x = 21,639.30 × 8,607.24
  4. Step 4: Simplify right side
    15,680.70x = 186,254,648.53
  5. Step 5: Solve for x
    x = 186,254,648.53/15,680.70
  6. Step 6: Final answer
    x = 11,877.95

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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.