Home / 18,871.02-26,034.75-12,156.12

Finding the Fourth Proportional to 18,871.02, 26,034.75 and 12,156.12

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Solution

The fourth proportional to 18,871.02, 26,034.75 and 12,156.12 is: 16,770.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.02 : 26,034.75 = 12,156.12 : x
  2. Step 2: Convert to fraction form
    18,871.02/26,034.75 = 12,156.12/x
  3. Step 3: Cross multiply
    18,871.02x = 26,034.75 × 12,156.12
  4. Step 4: Simplify right side
    18,871.02x = 316,481,545.17
  5. Step 5: Solve for x
    x = 316,481,545.17/18,871.02
  6. Step 6: Final answer
    x = 16,770.77

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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.