Home / 18,945.96-26,156.70-12,581.52

Finding the Fourth Proportional to 18,945.96, 26,156.70 and 12,581.52

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Solution

The fourth proportional to 18,945.96, 26,156.70 and 12,581.52 is: 17,369.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.96 : 26,156.70 = 12,581.52 : x
  2. Step 2: Convert to fraction form
    18,945.96/26,156.70 = 12,581.52/x
  3. Step 3: Cross multiply
    18,945.96x = 26,156.70 × 12,581.52
  4. Step 4: Simplify right side
    18,945.96x = 329,091,044.18
  5. Step 5: Solve for x
    x = 329,091,044.18/18,945.96
  6. Step 6: Final answer
    x = 17,369.99

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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.