Home / 20,297.12-28,010.12-11,345.00

Finding the Fourth Proportional to 20,297.12, 28,010.12 and 11,345.00

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Solution

The fourth proportional to 20,297.12, 28,010.12 and 11,345.00 is: 15,656.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.12 : 28,010.12 = 11,345.00 : x
  2. Step 2: Convert to fraction form
    20,297.12/28,010.12 = 11,345.00/x
  3. Step 3: Cross multiply
    20,297.12x = 28,010.12 × 11,345.00
  4. Step 4: Simplify right side
    20,297.12x = 317,774,614.62
  5. Step 5: Solve for x
    x = 317,774,614.62/20,297.12
  6. Step 6: Final answer
    x = 15,656.15

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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.