Home / 10,130.40-15,195.60-6,631.20

Finding the Fourth Proportional to 10,130.40, 15,195.60 and 6,631.20

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Solution

The fourth proportional to 10,130.40, 15,195.60 and 6,631.20 is: 9,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.40 : 15,195.60 = 6,631.20 : x
  2. Step 2: Convert to fraction form
    10,130.40/15,195.60 = 6,631.20/x
  3. Step 3: Cross multiply
    10,130.40x = 15,195.60 × 6,631.20
  4. Step 4: Simplify right side
    10,130.40x = 100,765,062.72
  5. Step 5: Solve for x
    x = 100,765,062.72/10,130.40
  6. Step 6: Final answer
    x = 9,946.80

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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.