Home / 15,271.20-22,885.20-11,291.40

Finding the Fourth Proportional to 15,271.20, 22,885.20 and 11,291.40

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Solution

The fourth proportional to 15,271.20, 22,885.20 and 11,291.40 is: 16,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.20 : 22,885.20 = 11,291.40 : x
  2. Step 2: Convert to fraction form
    15,271.20/22,885.20 = 11,291.40/x
  3. Step 3: Cross multiply
    15,271.20x = 22,885.20 × 11,291.40
  4. Step 4: Simplify right side
    15,271.20x = 258,405,947.28
  5. Step 5: Solve for x
    x = 258,405,947.28/15,271.20
  6. Step 6: Final answer
    x = 16,921.13

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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.