Home / 19,618.68-27,047.28-13,320.12

Finding the Fourth Proportional to 19,618.68, 27,047.28 and 13,320.12

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Solution

The fourth proportional to 19,618.68, 27,047.28 and 13,320.12 is: 18,363.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,618.68 : 27,047.28 = 13,320.12 : x
  2. Step 2: Convert to fraction form
    19,618.68/27,047.28 = 13,320.12/x
  3. Step 3: Cross multiply
    19,618.68x = 27,047.28 × 13,320.12
  4. Step 4: Simplify right side
    19,618.68x = 360,273,015.27
  5. Step 5: Solve for x
    x = 360,273,015.27/19,618.68
  6. Step 6: Final answer
    x = 18,363.77

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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.