Home / 12,459.60-17,170.56-8,916.64

Finding the Fourth Proportional to 12,459.60, 17,170.56 and 8,916.64

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Solution

The fourth proportional to 12,459.60, 17,170.56 and 8,916.64 is: 12,288.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.60 : 17,170.56 = 8,916.64 : x
  2. Step 2: Convert to fraction form
    12,459.60/17,170.56 = 8,916.64/x
  3. Step 3: Cross multiply
    12,459.60x = 17,170.56 × 8,916.64
  4. Step 4: Simplify right side
    12,459.60x = 153,103,702.12
  5. Step 5: Solve for x
    x = 153,103,702.12/12,459.60
  6. Step 6: Final answer
    x = 12,288.01

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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.