Home / 25,265.87-34,870.13-21,009.61

Finding the Fourth Proportional to 25,265.87, 34,870.13 and 21,009.61

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Solution

The fourth proportional to 25,265.87, 34,870.13 and 21,009.61 is: 28,995.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,265.87 : 34,870.13 = 21,009.61 : x
  2. Step 2: Convert to fraction form
    25,265.87/34,870.13 = 21,009.61/x
  3. Step 3: Cross multiply
    25,265.87x = 34,870.13 × 21,009.61
  4. Step 4: Simplify right side
    25,265.87x = 732,607,849.27
  5. Step 5: Solve for x
    x = 732,607,849.27/25,265.87
  6. Step 6: Final answer
    x = 28,995.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.