Home / 20,354.16-30,531.66-13,378.65

Finding the Fourth Proportional to 20,354.16, 30,531.66 and 13,378.65

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Solution

The fourth proportional to 20,354.16, 30,531.66 and 13,378.65 is: 20,068.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.16 : 30,531.66 = 13,378.65 : x
  2. Step 2: Convert to fraction form
    20,354.16/30,531.66 = 13,378.65/x
  3. Step 3: Cross multiply
    20,354.16x = 30,531.66 × 13,378.65
  4. Step 4: Simplify right side
    20,354.16x = 408,472,393.06
  5. Step 5: Solve for x
    x = 408,472,393.06/20,354.16
  6. Step 6: Final answer
    x = 20,068.25

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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.