Home / 20,690.88-31,036.38-7,543.23

Finding the Fourth Proportional to 20,690.88, 31,036.38 and 7,543.23

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Solution

The fourth proportional to 20,690.88, 31,036.38 and 7,543.23 is: 11,314.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.88 : 31,036.38 = 7,543.23 : x
  2. Step 2: Convert to fraction form
    20,690.88/31,036.38 = 7,543.23/x
  3. Step 3: Cross multiply
    20,690.88x = 31,036.38 × 7,543.23
  4. Step 4: Simplify right side
    20,690.88x = 234,114,552.71
  5. Step 5: Solve for x
    x = 234,114,552.71/20,690.88
  6. Step 6: Final answer
    x = 11,314.87

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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.