Home / 28,070.85-38,744.29-18,512.47

Finding the Fourth Proportional to 28,070.85, 38,744.29 and 18,512.47

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Solution

The fourth proportional to 28,070.85, 38,744.29 and 18,512.47 is: 25,551.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.85 : 38,744.29 = 18,512.47 : x
  2. Step 2: Convert to fraction form
    28,070.85/38,744.29 = 18,512.47/x
  3. Step 3: Cross multiply
    28,070.85x = 38,744.29 × 18,512.47
  4. Step 4: Simplify right side
    28,070.85x = 717,252,312.57
  5. Step 5: Solve for x
    x = 717,252,312.57/28,070.85
  6. Step 6: Final answer
    x = 25,551.50

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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.