Home / 25,972.80-38,934.52-8,430.36

Finding the Fourth Proportional to 25,972.80, 38,934.52 and 8,430.36

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Solution

The fourth proportional to 25,972.80, 38,934.52 and 8,430.36 is: 12,637.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,972.80 : 38,934.52 = 8,430.36 : x
  2. Step 2: Convert to fraction form
    25,972.80/38,934.52 = 8,430.36/x
  3. Step 3: Cross multiply
    25,972.80x = 38,934.52 × 8,430.36
  4. Step 4: Simplify right side
    25,972.80x = 328,232,020.03
  5. Step 5: Solve for x
    x = 328,232,020.03/25,972.80
  6. Step 6: Final answer
    x = 12,637.53

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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.