Home / 20,266.19-30,397.76-7,118.68

Finding the Fourth Proportional to 20,266.19, 30,397.76 and 7,118.68

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Solution

The fourth proportional to 20,266.19, 30,397.76 and 7,118.68 is: 10,677.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.19 : 30,397.76 = 7,118.68 : x
  2. Step 2: Convert to fraction form
    20,266.19/30,397.76 = 7,118.68/x
  3. Step 3: Cross multiply
    20,266.19x = 30,397.76 × 7,118.68
  4. Step 4: Simplify right side
    20,266.19x = 216,391,774.17
  5. Step 5: Solve for x
    x = 216,391,774.17/20,266.19
  6. Step 6: Final answer
    x = 10,677.48

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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.