Home / 28,079.49-42,106.08-10,305.72

Finding the Fourth Proportional to 28,079.49, 42,106.08 and 10,305.72

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Solution

The fourth proportional to 28,079.49, 42,106.08 and 10,305.72 is: 15,453.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.49 : 42,106.08 = 10,305.72 : x
  2. Step 2: Convert to fraction form
    28,079.49/42,106.08 = 10,305.72/x
  3. Step 3: Cross multiply
    28,079.49x = 42,106.08 × 10,305.72
  4. Step 4: Simplify right side
    28,079.49x = 433,933,470.78
  5. Step 5: Solve for x
    x = 433,933,470.78/28,079.49
  6. Step 6: Final answer
    x = 15,453.75

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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.