Home / 10,158.40-15,237.60-6,659.20

Finding the Fourth Proportional to 10,158.40, 15,237.60 and 6,659.20

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Solution

The fourth proportional to 10,158.40, 15,237.60 and 6,659.20 is: 9,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,158.40 : 15,237.60 = 6,659.20 : x
  2. Step 2: Convert to fraction form
    10,158.40/15,237.60 = 6,659.20/x
  3. Step 3: Cross multiply
    10,158.40x = 15,237.60 × 6,659.20
  4. Step 4: Simplify right side
    10,158.40x = 101,470,225.92
  5. Step 5: Solve for x
    x = 101,470,225.92/10,158.40
  6. Step 6: Final answer
    x = 9,988.80

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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.