Home / 19,680.20-27,158.13-10,727.88

Finding the Fourth Proportional to 19,680.20, 27,158.13 and 10,727.88

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Solution

The fourth proportional to 19,680.20, 27,158.13 and 10,727.88 is: 14,804.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.20 : 27,158.13 = 10,727.88 : x
  2. Step 2: Convert to fraction form
    19,680.20/27,158.13 = 10,727.88/x
  3. Step 3: Cross multiply
    19,680.20x = 27,158.13 × 10,727.88
  4. Step 4: Simplify right side
    19,680.20x = 291,349,050.69
  5. Step 5: Solve for x
    x = 291,349,050.69/19,680.20
  6. Step 6: Final answer
    x = 14,804.17

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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.