Home / 10,617.78-14,656.60-7,079.70

Finding the Fourth Proportional to 10,617.78, 14,656.60 and 7,079.70

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Solution

The fourth proportional to 10,617.78, 14,656.60 and 7,079.70 is: 9,772.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,617.78 : 14,656.60 = 7,079.70 : x
  2. Step 2: Convert to fraction form
    10,617.78/14,656.60 = 7,079.70/x
  3. Step 3: Cross multiply
    10,617.78x = 14,656.60 × 7,079.70
  4. Step 4: Simplify right side
    10,617.78x = 103,764,331.02
  5. Step 5: Solve for x
    x = 103,764,331.02/10,617.78
  6. Step 6: Final answer
    x = 9,772.70

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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.