Home / 19,897.65-29,816.40-13,312.05

Finding the Fourth Proportional to 19,897.65, 29,816.40 and 13,312.05

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Solution

The fourth proportional to 19,897.65, 29,816.40 and 13,312.05 is: 19,947.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,897.65 : 29,816.40 = 13,312.05 : x
  2. Step 2: Convert to fraction form
    19,897.65/29,816.40 = 13,312.05/x
  3. Step 3: Cross multiply
    19,897.65x = 29,816.40 × 13,312.05
  4. Step 4: Simplify right side
    19,897.65x = 396,917,345.73
  5. Step 5: Solve for x
    x = 396,917,345.73/19,897.65
  6. Step 6: Final answer
    x = 19,947.95

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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.