Home / 18,971.32-26,180.40-11,013.88

Finding the Fourth Proportional to 18,971.32, 26,180.40 and 11,013.88

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Solution

The fourth proportional to 18,971.32, 26,180.40 and 11,013.88 is: 15,199.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.32 : 26,180.40 = 11,013.88 : x
  2. Step 2: Convert to fraction form
    18,971.32/26,180.40 = 11,013.88/x
  3. Step 3: Cross multiply
    18,971.32x = 26,180.40 × 11,013.88
  4. Step 4: Simplify right side
    18,971.32x = 288,347,783.95
  5. Step 5: Solve for x
    x = 288,347,783.95/18,971.32
  6. Step 6: Final answer
    x = 15,199.14

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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.