Home / 15,820.20-23,730.30-13,681.80

Finding the Fourth Proportional to 15,820.20, 23,730.30 and 13,681.80

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Solution

The fourth proportional to 15,820.20, 23,730.30 and 13,681.80 is: 20,522.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.20 : 23,730.30 = 13,681.80 : x
  2. Step 2: Convert to fraction form
    15,820.20/23,730.30 = 13,681.80/x
  3. Step 3: Cross multiply
    15,820.20x = 23,730.30 × 13,681.80
  4. Step 4: Simplify right side
    15,820.20x = 324,673,218.54
  5. Step 5: Solve for x
    x = 324,673,218.54/15,820.20
  6. Step 6: Final answer
    x = 20,522.70

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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.