Home / 20,948.29-31,429.72-19,461.13

Finding the Fourth Proportional to 20,948.29, 31,429.72 and 19,461.13

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Solution

The fourth proportional to 20,948.29, 31,429.72 and 19,461.13 is: 29,198.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.29 : 31,429.72 = 19,461.13 : x
  2. Step 2: Convert to fraction form
    20,948.29/31,429.72 = 19,461.13/x
  3. Step 3: Cross multiply
    20,948.29x = 31,429.72 × 19,461.13
  4. Step 4: Simplify right side
    20,948.29x = 611,657,812.54
  5. Step 5: Solve for x
    x = 611,657,812.54/20,948.29
  6. Step 6: Final answer
    x = 29,198.46

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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.