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Finding the Fourth Proportional to 28,595.16, 42,900.84 and 11,963.16

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Solution

The fourth proportional to 28,595.16, 42,900.84 and 11,963.16 is: 17,948.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,595.16 : 42,900.84 = 11,963.16 : x
  2. Step 2: Convert to fraction form
    28,595.16/42,900.84 = 11,963.16/x
  3. Step 3: Cross multiply
    28,595.16x = 42,900.84 × 11,963.16
  4. Step 4: Simplify right side
    28,595.16x = 513,229,613.05
  5. Step 5: Solve for x
    x = 513,229,613.05/28,595.16
  6. Step 6: Final answer
    x = 17,948.13

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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.