Home / 20,776.48-28,671.50-11,345.04

Finding the Fourth Proportional to 20,776.48, 28,671.50 and 11,345.04

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Solution

The fourth proportional to 20,776.48, 28,671.50 and 11,345.04 is: 15,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.48 : 28,671.50 = 11,345.04 : x
  2. Step 2: Convert to fraction form
    20,776.48/28,671.50 = 11,345.04/x
  3. Step 3: Cross multiply
    20,776.48x = 28,671.50 × 11,345.04
  4. Step 4: Simplify right side
    20,776.48x = 325,279,314.36
  5. Step 5: Solve for x
    x = 325,279,314.36/20,776.48
  6. Step 6: Final answer
    x = 15,656.13

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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.