Home / 13,660.04-18,856.66-9,186.38

Finding the Fourth Proportional to 13,660.04, 18,856.66 and 9,186.38

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Solution

The fourth proportional to 13,660.04, 18,856.66 and 9,186.38 is: 12,681.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.04 : 18,856.66 = 9,186.38 : x
  2. Step 2: Convert to fraction form
    13,660.04/18,856.66 = 9,186.38/x
  3. Step 3: Cross multiply
    13,660.04x = 18,856.66 × 9,186.38
  4. Step 4: Simplify right side
    13,660.04x = 173,224,444.29
  5. Step 5: Solve for x
    x = 173,224,444.29/13,660.04
  6. Step 6: Final answer
    x = 12,681.11

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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.