Home / 15,934.76-21,990.40-9,220.96

Finding the Fourth Proportional to 15,934.76, 21,990.40 and 9,220.96

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Solution

The fourth proportional to 15,934.76, 21,990.40 and 9,220.96 is: 12,725.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.76 : 21,990.40 = 9,220.96 : x
  2. Step 2: Convert to fraction form
    15,934.76/21,990.40 = 9,220.96/x
  3. Step 3: Cross multiply
    15,934.76x = 21,990.40 × 9,220.96
  4. Step 4: Simplify right side
    15,934.76x = 202,772,598.78
  5. Step 5: Solve for x
    x = 202,772,598.78/15,934.76
  6. Step 6: Final answer
    x = 12,725.17

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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.