Home / 28,820.88-39,748.68-18,744.48

Finding the Fourth Proportional to 28,820.88, 39,748.68 and 18,744.48

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Solution

The fourth proportional to 28,820.88, 39,748.68 and 18,744.48 is: 25,851.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.88 : 39,748.68 = 18,744.48 : x
  2. Step 2: Convert to fraction form
    28,820.88/39,748.68 = 18,744.48/x
  3. Step 3: Cross multiply
    28,820.88x = 39,748.68 × 18,744.48
  4. Step 4: Simplify right side
    28,820.88x = 745,068,337.29
  5. Step 5: Solve for x
    x = 745,068,337.29/28,820.88
  6. Step 6: Final answer
    x = 25,851.69

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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.