Home / 19,660.51-29,451.75-9,279.55

Finding the Fourth Proportional to 19,660.51, 29,451.75 and 9,279.55

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Solution

The fourth proportional to 19,660.51, 29,451.75 and 9,279.55 is: 13,900.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.51 : 29,451.75 = 9,279.55 : x
  2. Step 2: Convert to fraction form
    19,660.51/29,451.75 = 9,279.55/x
  3. Step 3: Cross multiply
    19,660.51x = 29,451.75 × 9,279.55
  4. Step 4: Simplify right side
    19,660.51x = 273,298,986.71
  5. Step 5: Solve for x
    x = 273,298,986.71/19,660.51
  6. Step 6: Final answer
    x = 13,900.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.