Home / 18,986.18-28,440.98-15,897.06

Finding the Fourth Proportional to 18,986.18, 28,440.98 and 15,897.06

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Solution

The fourth proportional to 18,986.18, 28,440.98 and 15,897.06 is: 23,813.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.18 : 28,440.98 = 15,897.06 : x
  2. Step 2: Convert to fraction form
    18,986.18/28,440.98 = 15,897.06/x
  3. Step 3: Cross multiply
    18,986.18x = 28,440.98 × 15,897.06
  4. Step 4: Simplify right side
    18,986.18x = 452,127,965.52
  5. Step 5: Solve for x
    x = 452,127,965.52/18,986.18
  6. Step 6: Final answer
    x = 23,813.53

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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.