Home / 28,440.72-39,218.91-18,877.14

Finding the Fourth Proportional to 28,440.72, 39,218.91 and 18,877.14

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Solution

The fourth proportional to 28,440.72, 39,218.91 and 18,877.14 is: 26,031.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.72 : 39,218.91 = 18,877.14 : x
  2. Step 2: Convert to fraction form
    28,440.72/39,218.91 = 18,877.14/x
  3. Step 3: Cross multiply
    28,440.72x = 39,218.91 × 18,877.14
  4. Step 4: Simplify right side
    28,440.72x = 740,340,854.72
  5. Step 5: Solve for x
    x = 740,340,854.72/28,440.72
  6. Step 6: Final answer
    x = 26,031.02

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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.