Home / 10,271.20-15,406.80-8,975.20

Finding the Fourth Proportional to 10,271.20, 15,406.80 and 8,975.20

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Solution

The fourth proportional to 10,271.20, 15,406.80 and 8,975.20 is: 13,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,271.20 : 15,406.80 = 8,975.20 : x
  2. Step 2: Convert to fraction form
    10,271.20/15,406.80 = 8,975.20/x
  3. Step 3: Cross multiply
    10,271.20x = 15,406.80 × 8,975.20
  4. Step 4: Simplify right side
    10,271.20x = 138,279,111.36
  5. Step 5: Solve for x
    x = 138,279,111.36/10,271.20
  6. Step 6: Final answer
    x = 13,462.80

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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.