Home / 21,323.76-31,987.44-5,742.24

Finding the Fourth Proportional to 21,323.76, 31,987.44 and 5,742.24

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Solution

The fourth proportional to 21,323.76, 31,987.44 and 5,742.24 is: 8,613.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.76 : 31,987.44 = 5,742.24 : x
  2. Step 2: Convert to fraction form
    21,323.76/31,987.44 = 5,742.24/x
  3. Step 3: Cross multiply
    21,323.76x = 31,987.44 × 5,742.24
  4. Step 4: Simplify right side
    21,323.76x = 183,679,557.47
  5. Step 5: Solve for x
    x = 183,679,557.47/21,323.76
  6. Step 6: Final answer
    x = 8,613.84

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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.