Home / 20,722.64-28,596.98-11,291.24

Finding the Fourth Proportional to 20,722.64, 28,596.98 and 11,291.24

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Solution

The fourth proportional to 20,722.64, 28,596.98 and 11,291.24 is: 15,581.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.64 : 28,596.98 = 11,291.24 : x
  2. Step 2: Convert to fraction form
    20,722.64/28,596.98 = 11,291.24/x
  3. Step 3: Cross multiply
    20,722.64x = 28,596.98 × 11,291.24
  4. Step 4: Simplify right side
    20,722.64x = 322,895,364.46
  5. Step 5: Solve for x
    x = 322,895,364.46/20,722.64
  6. Step 6: Final answer
    x = 15,581.77

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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.