Home / 20,885.17-31,329.73-7,561.52

Finding the Fourth Proportional to 20,885.17, 31,329.73 and 7,561.52

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Solution

The fourth proportional to 20,885.17, 31,329.73 and 7,561.52 is: 11,343.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.17 : 31,329.73 = 7,561.52 : x
  2. Step 2: Convert to fraction form
    20,885.17/31,329.73 = 7,561.52/x
  3. Step 3: Cross multiply
    20,885.17x = 31,329.73 × 7,561.52
  4. Step 4: Simplify right side
    20,885.17x = 236,900,379.99
  5. Step 5: Solve for x
    x = 236,900,379.99/20,885.17
  6. Step 6: Final answer
    x = 11,343.00

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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.