Home / 10,956.60-15,117.30-6,647.40

Finding the Fourth Proportional to 10,956.60, 15,117.30 and 6,647.40

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Solution

The fourth proportional to 10,956.60, 15,117.30 and 6,647.40 is: 9,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.60 : 15,117.30 = 6,647.40 : x
  2. Step 2: Convert to fraction form
    10,956.60/15,117.30 = 6,647.40/x
  3. Step 3: Cross multiply
    10,956.60x = 15,117.30 × 6,647.40
  4. Step 4: Simplify right side
    10,956.60x = 100,490,740.02
  5. Step 5: Solve for x
    x = 100,490,740.02/10,956.60
  6. Step 6: Final answer
    x = 9,171.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.