Home / 20,795.13-28,700.52-13,244.72

Finding the Fourth Proportional to 20,795.13, 28,700.52 and 13,244.72

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Solution

The fourth proportional to 20,795.13, 28,700.52 and 13,244.72 is: 18,279.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.13 : 28,700.52 = 13,244.72 : x
  2. Step 2: Convert to fraction form
    20,795.13/28,700.52 = 13,244.72/x
  3. Step 3: Cross multiply
    20,795.13x = 28,700.52 × 13,244.72
  4. Step 4: Simplify right side
    20,795.13x = 380,130,207.75
  5. Step 5: Solve for x
    x = 380,130,207.75/20,795.13
  6. Step 6: Final answer
    x = 18,279.77

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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.