Home / 20,293.95-28,005.18-11,343.20

Finding the Fourth Proportional to 20,293.95, 28,005.18 and 11,343.20

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Solution

The fourth proportional to 20,293.95, 28,005.18 and 11,343.20 is: 15,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.95 : 28,005.18 = 11,343.20 : x
  2. Step 2: Convert to fraction form
    20,293.95/28,005.18 = 11,343.20/x
  3. Step 3: Cross multiply
    20,293.95x = 28,005.18 × 11,343.20
  4. Step 4: Simplify right side
    20,293.95x = 317,668,217.75
  5. Step 5: Solve for x
    x = 317,668,217.75/20,293.95
  6. Step 6: Final answer
    x = 15,653.35

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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.