Home / 15,394.16-21,229.68-10,280.64

Finding the Fourth Proportional to 15,394.16, 21,229.68 and 10,280.64

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Solution

The fourth proportional to 15,394.16, 21,229.68 and 10,280.64 is: 14,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.16 : 21,229.68 = 10,280.64 : x
  2. Step 2: Convert to fraction form
    15,394.16/21,229.68 = 10,280.64/x
  3. Step 3: Cross multiply
    15,394.16x = 21,229.68 × 10,280.64
  4. Step 4: Simplify right side
    15,394.16x = 218,254,697.40
  5. Step 5: Solve for x
    x = 218,254,697.40/15,394.16
  6. Step 6: Final answer
    x = 14,177.76

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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.