Home / 26,009.30-38,988.84-11,978.99

Finding the Fourth Proportional to 26,009.30, 38,988.84 and 11,978.99

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Solution

The fourth proportional to 26,009.30, 38,988.84 and 11,978.99 is: 17,956.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,009.30 : 38,988.84 = 11,978.99 : x
  2. Step 2: Convert to fraction form
    26,009.30/38,988.84 = 11,978.99/x
  3. Step 3: Cross multiply
    26,009.30x = 38,988.84 × 11,978.99
  4. Step 4: Simplify right side
    26,009.30x = 467,046,920.66
  5. Step 5: Solve for x
    x = 467,046,920.66/26,009.30
  6. Step 6: Final answer
    x = 17,956.92

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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.