Home / 28,290.32-42,440.92-10,758.78

Finding the Fourth Proportional to 28,290.32, 42,440.92 and 10,758.78

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Solution

The fourth proportional to 28,290.32, 42,440.92 and 10,758.78 is: 16,140.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.32 : 42,440.92 = 10,758.78 : x
  2. Step 2: Convert to fraction form
    28,290.32/42,440.92 = 10,758.78/x
  3. Step 3: Cross multiply
    28,290.32x = 42,440.92 × 10,758.78
  4. Step 4: Simplify right side
    28,290.32x = 456,612,521.28
  5. Step 5: Solve for x
    x = 456,612,521.28/28,290.32
  6. Step 6: Final answer
    x = 16,140.24

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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.