Home / 20,297.55-28,011.23-11,345.08

Finding the Fourth Proportional to 20,297.55, 28,011.23 and 11,345.08

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Solution

The fourth proportional to 20,297.55, 28,011.23 and 11,345.08 is: 15,656.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.55 : 28,011.23 = 11,345.08 : x
  2. Step 2: Convert to fraction form
    20,297.55/28,011.23 = 11,345.08/x
  3. Step 3: Cross multiply
    20,297.55x = 28,011.23 × 11,345.08
  4. Step 4: Simplify right side
    20,297.55x = 317,789,518.49
  5. Step 5: Solve for x
    x = 317,789,518.49/20,297.55
  6. Step 6: Final answer
    x = 15,656.55

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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.