Home / 21,330.42-31,987.53-10,230.18

Finding the Fourth Proportional to 21,330.42, 31,987.53 and 10,230.18

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Solution

The fourth proportional to 21,330.42, 31,987.53 and 10,230.18 is: 15,341.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.42 : 31,987.53 = 10,230.18 : x
  2. Step 2: Convert to fraction form
    21,330.42/31,987.53 = 10,230.18/x
  3. Step 3: Cross multiply
    21,330.42x = 31,987.53 × 10,230.18
  4. Step 4: Simplify right side
    21,330.42x = 327,238,189.66
  5. Step 5: Solve for x
    x = 327,238,189.66/21,330.42
  6. Step 6: Final answer
    x = 15,341.39

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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.