Home / 13,356.72-18,426.12-8,642.52

Finding the Fourth Proportional to 13,356.72, 18,426.12 and 8,642.52

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Solution

The fourth proportional to 13,356.72, 18,426.12 and 8,642.52 is: 11,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.72 : 18,426.12 = 8,642.52 : x
  2. Step 2: Convert to fraction form
    13,356.72/18,426.12 = 8,642.52/x
  3. Step 3: Cross multiply
    13,356.72x = 18,426.12 × 8,642.52
  4. Step 4: Simplify right side
    13,356.72x = 159,248,110.62
  5. Step 5: Solve for x
    x = 159,248,110.62/13,356.72
  6. Step 6: Final answer
    x = 11,922.70

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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.