Home / 13,118.08-18,228.28-12,952.48

Finding the Fourth Proportional to 13,118.08, 18,228.28 and 12,952.48

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Solution

The fourth proportional to 13,118.08, 18,228.28 and 12,952.48 is: 17,998.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.08 : 18,228.28 = 12,952.48 : x
  2. Step 2: Convert to fraction form
    13,118.08/18,228.28 = 12,952.48/x
  3. Step 3: Cross multiply
    13,118.08x = 18,228.28 × 12,952.48
  4. Step 4: Simplify right side
    13,118.08x = 236,101,432.13
  5. Step 5: Solve for x
    x = 236,101,432.13/13,118.08
  6. Step 6: Final answer
    x = 17,998.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.