Home / 19,555.40-29,347.68-7,868.72

Finding the Fourth Proportional to 19,555.40, 29,347.68 and 7,868.72

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Solution

The fourth proportional to 19,555.40, 29,347.68 and 7,868.72 is: 11,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,555.40 : 29,347.68 = 7,868.72 : x
  2. Step 2: Convert to fraction form
    19,555.40/29,347.68 = 7,868.72/x
  3. Step 3: Cross multiply
    19,555.40x = 29,347.68 × 7,868.72
  4. Step 4: Simplify right side
    19,555.40x = 230,928,676.57
  5. Step 5: Solve for x
    x = 230,928,676.57/19,555.40
  6. Step 6: Final answer
    x = 11,808.95

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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.