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Finding the Fourth Proportional to 28,398.08, 42,570.84 and 10,853.84

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Solution

The fourth proportional to 28,398.08, 42,570.84 and 10,853.84 is: 16,270.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.08 : 42,570.84 = 10,853.84 : x
  2. Step 2: Convert to fraction form
    28,398.08/42,570.84 = 10,853.84/x
  3. Step 3: Cross multiply
    28,398.08x = 42,570.84 × 10,853.84
  4. Step 4: Simplify right side
    28,398.08x = 462,057,086.03
  5. Step 5: Solve for x
    x = 462,057,086.03/28,398.08
  6. Step 6: Final answer
    x = 16,270.72

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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.