Home / 20,875.24-31,297.74-7,543.72

Finding the Fourth Proportional to 20,875.24, 31,297.74 and 7,543.72

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Solution

The fourth proportional to 20,875.24, 31,297.74 and 7,543.72 is: 11,310.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.24 : 31,297.74 = 7,543.72 : x
  2. Step 2: Convert to fraction form
    20,875.24/31,297.74 = 7,543.72/x
  3. Step 3: Cross multiply
    20,875.24x = 31,297.74 × 7,543.72
  4. Step 4: Simplify right side
    20,875.24x = 236,101,387.19
  5. Step 5: Solve for x
    x = 236,101,387.19/20,875.24
  6. Step 6: Final answer
    x = 11,310.12

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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.