Home / 20,297.74-28,010.32-11,345.30

Finding the Fourth Proportional to 20,297.74, 28,010.32 and 11,345.30

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Solution

The fourth proportional to 20,297.74, 28,010.32 and 11,345.30 is: 15,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.74 : 28,010.32 = 11,345.30 : x
  2. Step 2: Convert to fraction form
    20,297.74/28,010.32 = 11,345.30/x
  3. Step 3: Cross multiply
    20,297.74x = 28,010.32 × 11,345.30
  4. Step 4: Simplify right side
    20,297.74x = 317,785,483.50
  5. Step 5: Solve for x
    x = 317,785,483.50/20,297.74
  6. Step 6: Final answer
    x = 15,656.20

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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.