Home / 21,342.08-31,987.20-15,103.93

Finding the Fourth Proportional to 21,342.08, 31,987.20 and 15,103.93

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Solution

The fourth proportional to 21,342.08, 31,987.20 and 15,103.93 is: 22,637.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.08 : 31,987.20 = 15,103.93 : x
  2. Step 2: Convert to fraction form
    21,342.08/31,987.20 = 15,103.93/x
  3. Step 3: Cross multiply
    21,342.08x = 31,987.20 × 15,103.93
  4. Step 4: Simplify right side
    21,342.08x = 483,132,429.70
  5. Step 5: Solve for x
    x = 483,132,429.70/21,342.08
  6. Step 6: Final answer
    x = 22,637.55

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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.