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Finding the Fourth Proportional to 28,126.60, 42,169.02 and 17,030.65

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Solution

The fourth proportional to 28,126.60, 42,169.02 and 17,030.65 is: 25,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.60 : 42,169.02 = 17,030.65 : x
  2. Step 2: Convert to fraction form
    28,126.60/42,169.02 = 17,030.65/x
  3. Step 3: Cross multiply
    28,126.60x = 42,169.02 × 17,030.65
  4. Step 4: Simplify right side
    28,126.60x = 718,165,820.46
  5. Step 5: Solve for x
    x = 718,165,820.46/28,126.60
  6. Step 6: Final answer
    x = 25,533.33

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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.