Home / 22,987.26-31,720.68-12,913.76

Finding the Fourth Proportional to 22,987.26, 31,720.68 and 12,913.76

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Solution

The fourth proportional to 22,987.26, 31,720.68 and 12,913.76 is: 17,820.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,987.26 : 31,720.68 = 12,913.76 : x
  2. Step 2: Convert to fraction form
    22,987.26/31,720.68 = 12,913.76/x
  3. Step 3: Cross multiply
    22,987.26x = 31,720.68 × 12,913.76
  4. Step 4: Simplify right side
    22,987.26x = 409,633,327.86
  5. Step 5: Solve for x
    x = 409,633,327.86/22,987.26
  6. Step 6: Final answer
    x = 17,820.02

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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.