Home / 20,865.24-31,291.02-7,011

Finding the Fourth Proportional to 20,865.24, 31,291.02 and 7,011

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Solution

The fourth proportional to 20,865.24, 31,291.02 and 7,011 is: 10,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.24 : 31,291.02 = 7,011 : x
  2. Step 2: Convert to fraction form
    20,865.24/31,291.02 = 7,011/x
  3. Step 3: Cross multiply
    20,865.24x = 31,291.02 × 7,011
  4. Step 4: Simplify right side
    20,865.24x = 219,381,341.22
  5. Step 5: Solve for x
    x = 219,381,341.22/20,865.24
  6. Step 6: Final answer
    x = 10,514.20

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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.