Home / 28,546.04-42,808.41-9,820.78

Finding the Fourth Proportional to 28,546.04, 42,808.41 and 9,820.78

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Solution

The fourth proportional to 28,546.04, 42,808.41 and 9,820.78 is: 14,727.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,546.04 : 42,808.41 = 9,820.78 : x
  2. Step 2: Convert to fraction form
    28,546.04/42,808.41 = 9,820.78/x
  3. Step 3: Cross multiply
    28,546.04x = 42,808.41 × 9,820.78
  4. Step 4: Simplify right side
    28,546.04x = 420,411,976.76
  5. Step 5: Solve for x
    x = 420,411,976.76/28,546.04
  6. Step 6: Final answer
    x = 14,727.51

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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.