Home / 10,115.60-15,172.65-4,271.63

Finding the Fourth Proportional to 10,115.60, 15,172.65 and 4,271.63

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Solution

The fourth proportional to 10,115.60, 15,172.65 and 4,271.63 is: 6,407.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.60 : 15,172.65 = 4,271.63 : x
  2. Step 2: Convert to fraction form
    10,115.60/15,172.65 = 4,271.63/x
  3. Step 3: Cross multiply
    10,115.60x = 15,172.65 × 4,271.63
  4. Step 4: Simplify right side
    10,115.60x = 64,811,871.06
  5. Step 5: Solve for x
    x = 64,811,871.06/10,115.60
  6. Step 6: Final answer
    x = 6,407.12

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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.