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Finding the Fourth Proportional to 18,759.01, 28,130.30 and 8,901.10

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Solution

The fourth proportional to 18,759.01, 28,130.30 and 8,901.10 is: 13,347.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.01 : 28,130.30 = 8,901.10 : x
  2. Step 2: Convert to fraction form
    18,759.01/28,130.30 = 8,901.10/x
  3. Step 3: Cross multiply
    18,759.01x = 28,130.30 × 8,901.10
  4. Step 4: Simplify right side
    18,759.01x = 250,390,613.33
  5. Step 5: Solve for x
    x = 250,390,613.33/18,759.01
  6. Step 6: Final answer
    x = 13,347.75

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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.