Home / 20,719.65-28,592.85-11,288.22

Finding the Fourth Proportional to 20,719.65, 28,592.85 and 11,288.22

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Solution

The fourth proportional to 20,719.65, 28,592.85 and 11,288.22 is: 15,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.65 : 28,592.85 = 11,288.22 : x
  2. Step 2: Convert to fraction form
    20,719.65/28,592.85 = 11,288.22/x
  3. Step 3: Cross multiply
    20,719.65x = 28,592.85 × 11,288.22
  4. Step 4: Simplify right side
    20,719.65x = 322,762,381.23
  5. Step 5: Solve for x
    x = 322,762,381.23/20,719.65
  6. Step 6: Final answer
    x = 15,577.60

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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.