Home / 20,323.21-28,047.12-11,370.18

Finding the Fourth Proportional to 20,323.21, 28,047.12 and 11,370.18

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Solution

The fourth proportional to 20,323.21, 28,047.12 and 11,370.18 is: 15,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,323.21 : 28,047.12 = 11,370.18 : x
  2. Step 2: Convert to fraction form
    20,323.21/28,047.12 = 11,370.18/x
  3. Step 3: Cross multiply
    20,323.21x = 28,047.12 × 11,370.18
  4. Step 4: Simplify right side
    20,323.21x = 318,900,605.80
  5. Step 5: Solve for x
    x = 318,900,605.80/20,323.21
  6. Step 6: Final answer
    x = 15,691.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.