Home / 20,710.54-28,580.58-11,279.14

Finding the Fourth Proportional to 20,710.54, 28,580.58 and 11,279.14

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Solution

The fourth proportional to 20,710.54, 28,580.58 and 11,279.14 is: 15,565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.54 : 28,580.58 = 11,279.14 : x
  2. Step 2: Convert to fraction form
    20,710.54/28,580.58 = 11,279.14/x
  3. Step 3: Cross multiply
    20,710.54x = 28,580.58 × 11,279.14
  4. Step 4: Simplify right side
    20,710.54x = 322,364,363.10
  5. Step 5: Solve for x
    x = 322,364,363.10/20,710.54
  6. Step 6: Final answer
    x = 15,565.23

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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.