Home / 19,684.19-29,510.89-13,428.70

Finding the Fourth Proportional to 19,684.19, 29,510.89 and 13,428.70

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Solution

The fourth proportional to 19,684.19, 29,510.89 and 13,428.70 is: 20,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,684.19 : 29,510.89 = 13,428.70 : x
  2. Step 2: Convert to fraction form
    19,684.19/29,510.89 = 13,428.70/x
  3. Step 3: Cross multiply
    19,684.19x = 29,510.89 × 13,428.70
  4. Step 4: Simplify right side
    19,684.19x = 396,292,888.54
  5. Step 5: Solve for x
    x = 396,292,888.54/19,684.19
  6. Step 6: Final answer
    x = 20,132.55

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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.