Home / 15,861.60-21,899.70-14,177.61

Finding the Fourth Proportional to 15,861.60, 21,899.70 and 14,177.61

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Solution

The fourth proportional to 15,861.60, 21,899.70 and 14,177.61 is: 19,574.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.60 : 21,899.70 = 14,177.61 : x
  2. Step 2: Convert to fraction form
    15,861.60/21,899.70 = 14,177.61/x
  3. Step 3: Cross multiply
    15,861.60x = 21,899.70 × 14,177.61
  4. Step 4: Simplify right side
    15,861.60x = 310,485,405.72
  5. Step 5: Solve for x
    x = 310,485,405.72/15,861.60
  6. Step 6: Final answer
    x = 19,574.66

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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.