Home / 21,001.12-31,506.56-7,150.24

Finding the Fourth Proportional to 21,001.12, 31,506.56 and 7,150.24

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Solution

The fourth proportional to 21,001.12, 31,506.56 and 7,150.24 is: 10,727.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.12 : 31,506.56 = 7,150.24 : x
  2. Step 2: Convert to fraction form
    21,001.12/31,506.56 = 7,150.24/x
  3. Step 3: Cross multiply
    21,001.12x = 31,506.56 × 7,150.24
  4. Step 4: Simplify right side
    21,001.12x = 225,279,465.57
  5. Step 5: Solve for x
    x = 225,279,465.57/21,001.12
  6. Step 6: Final answer
    x = 10,727.02

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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.