Home / 15,928.14-21,990.78-10,265.70

Finding the Fourth Proportional to 15,928.14, 21,990.78 and 10,265.70

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Solution

The fourth proportional to 15,928.14, 21,990.78 and 10,265.70 is: 14,173.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.14 : 21,990.78 = 10,265.70 : x
  2. Step 2: Convert to fraction form
    15,928.14/21,990.78 = 10,265.70/x
  3. Step 3: Cross multiply
    15,928.14x = 21,990.78 × 10,265.70
  4. Step 4: Simplify right side
    15,928.14x = 225,750,750.25
  5. Step 5: Solve for x
    x = 225,750,750.25/15,928.14
  6. Step 6: Final answer
    x = 14,173.08

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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.