Home / 17,881.36-26,818.90-9,991.76

Finding the Fourth Proportional to 17,881.36, 26,818.90 and 9,991.76

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Solution

The fourth proportional to 17,881.36, 26,818.90 and 9,991.76 is: 14,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,881.36 : 26,818.90 = 9,991.76 : x
  2. Step 2: Convert to fraction form
    17,881.36/26,818.90 = 9,991.76/x
  3. Step 3: Cross multiply
    17,881.36x = 26,818.90 × 9,991.76
  4. Step 4: Simplify right side
    17,881.36x = 267,967,853.19
  5. Step 5: Solve for x
    x = 267,967,853.19/17,881.36
  6. Step 6: Final answer
    x = 14,985.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.