Home / 28,971.18-39,975-17,036.88

Finding the Fourth Proportional to 28,971.18, 39,975 and 17,036.88

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Solution

The fourth proportional to 28,971.18, 39,975 and 17,036.88 is: 23,507.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.18 : 39,975 = 17,036.88 : x
  2. Step 2: Convert to fraction form
    28,971.18/39,975 = 17,036.88/x
  3. Step 3: Cross multiply
    28,971.18x = 39,975 × 17,036.88
  4. Step 4: Simplify right side
    28,971.18x = 681,049,278
  5. Step 5: Solve for x
    x = 681,049,278/28,971.18
  6. Step 6: Final answer
    x = 23,507.82

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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.