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Finding the Fourth Proportional to 28,422.01, 42,645.30 and 15,259

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Solution

The fourth proportional to 28,422.01, 42,645.30 and 15,259 is: 22,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.01 : 42,645.30 = 15,259 : x
  2. Step 2: Convert to fraction form
    28,422.01/42,645.30 = 15,259/x
  3. Step 3: Cross multiply
    28,422.01x = 42,645.30 × 15,259
  4. Step 4: Simplify right side
    28,422.01x = 650,724,632.70
  5. Step 5: Solve for x
    x = 650,724,632.70/28,422.01
  6. Step 6: Final answer
    x = 22,895.10

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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.