Home / 13,561.01-18,722.90-9,310.70

Finding the Fourth Proportional to 13,561.01, 18,722.90 and 9,310.70

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Solution

The fourth proportional to 13,561.01, 18,722.90 and 9,310.70 is: 12,854.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.01 : 18,722.90 = 9,310.70 : x
  2. Step 2: Convert to fraction form
    13,561.01/18,722.90 = 9,310.70/x
  3. Step 3: Cross multiply
    13,561.01x = 18,722.90 × 9,310.70
  4. Step 4: Simplify right side
    13,561.01x = 174,323,258.48
  5. Step 5: Solve for x
    x = 174,323,258.48/13,561.01
  6. Step 6: Final answer
    x = 12,854.74

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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.