Home / 21,000.26-28,958.10-18,884.18

Finding the Fourth Proportional to 21,000.26, 28,958.10 and 18,884.18

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Solution

The fourth proportional to 21,000.26, 28,958.10 and 18,884.18 is: 26,040.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.26 : 28,958.10 = 18,884.18 : x
  2. Step 2: Convert to fraction form
    21,000.26/28,958.10 = 18,884.18/x
  3. Step 3: Cross multiply
    21,000.26x = 28,958.10 × 18,884.18
  4. Step 4: Simplify right side
    21,000.26x = 546,849,972.86
  5. Step 5: Solve for x
    x = 546,849,972.86/21,000.26
  6. Step 6: Final answer
    x = 26,040.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.