Home / 19,861.60-27,409.17-10,909.21

Finding the Fourth Proportional to 19,861.60, 27,409.17 and 10,909.21

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Solution

The fourth proportional to 19,861.60, 27,409.17 and 10,909.21 is: 15,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.60 : 27,409.17 = 10,909.21 : x
  2. Step 2: Convert to fraction form
    19,861.60/27,409.17 = 10,909.21/x
  3. Step 3: Cross multiply
    19,861.60x = 27,409.17 × 10,909.21
  4. Step 4: Simplify right side
    19,861.60x = 299,012,391.46
  5. Step 5: Solve for x
    x = 299,012,391.46/19,861.60
  6. Step 6: Final answer
    x = 15,054.80

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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.