Home / 21,002.08-31,459.92-15,170.40

Finding the Fourth Proportional to 21,002.08, 31,459.92 and 15,170.40

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Solution

The fourth proportional to 21,002.08, 31,459.92 and 15,170.40 is: 22,724.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.08 : 31,459.92 = 15,170.40 : x
  2. Step 2: Convert to fraction form
    21,002.08/31,459.92 = 15,170.40/x
  3. Step 3: Cross multiply
    21,002.08x = 31,459.92 × 15,170.40
  4. Step 4: Simplify right side
    21,002.08x = 477,259,570.37
  5. Step 5: Solve for x
    x = 477,259,570.37/21,002.08
  6. Step 6: Final answer
    x = 22,724.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.