Home / 18,937.40-26,138.30-12,897.63

Finding the Fourth Proportional to 18,937.40, 26,138.30 and 12,897.63

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Solution

The fourth proportional to 18,937.40, 26,138.30 and 12,897.63 is: 17,801.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.40 : 26,138.30 = 12,897.63 : x
  2. Step 2: Convert to fraction form
    18,937.40/26,138.30 = 12,897.63/x
  3. Step 3: Cross multiply
    18,937.40x = 26,138.30 × 12,897.63
  4. Step 4: Simplify right side
    18,937.40x = 337,122,057.74
  5. Step 5: Solve for x
    x = 337,122,057.74/18,937.40
  6. Step 6: Final answer
    x = 17,801.92

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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.