Home / 19,861.72-27,409.60-10,909.71

Finding the Fourth Proportional to 19,861.72, 27,409.60 and 10,909.71

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Solution

The fourth proportional to 19,861.72, 27,409.60 and 10,909.71 is: 15,055.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.72 : 27,409.60 = 10,909.71 : x
  2. Step 2: Convert to fraction form
    19,861.72/27,409.60 = 10,909.71/x
  3. Step 3: Cross multiply
    19,861.72x = 27,409.60 × 10,909.71
  4. Step 4: Simplify right side
    19,861.72x = 299,030,893.28
  5. Step 5: Solve for x
    x = 299,030,893.28/19,861.72
  6. Step 6: Final answer
    x = 15,055.64

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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.