Home / 20,297.88-28,011.60-11,345.04

Finding the Fourth Proportional to 20,297.88, 28,011.60 and 11,345.04

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Solution

The fourth proportional to 20,297.88, 28,011.60 and 11,345.04 is: 15,656.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.88 : 28,011.60 = 11,345.04 : x
  2. Step 2: Convert to fraction form
    20,297.88/28,011.60 = 11,345.04/x
  3. Step 3: Cross multiply
    20,297.88x = 28,011.60 × 11,345.04
  4. Step 4: Simplify right side
    20,297.88x = 317,792,722.46
  5. Step 5: Solve for x
    x = 317,792,722.46/20,297.88
  6. Step 6: Final answer
    x = 15,656.45

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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.