Home / 10,347.20-15,525.60-5,422.40

Finding the Fourth Proportional to 10,347.20, 15,525.60 and 5,422.40

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Solution

The fourth proportional to 10,347.20, 15,525.60 and 5,422.40 is: 8,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,347.20 : 15,525.60 = 5,422.40 : x
  2. Step 2: Convert to fraction form
    10,347.20/15,525.60 = 5,422.40/x
  3. Step 3: Cross multiply
    10,347.20x = 15,525.60 × 5,422.40
  4. Step 4: Simplify right side
    10,347.20x = 84,186,013.44
  5. Step 5: Solve for x
    x = 84,186,013.44/10,347.20
  6. Step 6: Final answer
    x = 8,136.12

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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.