Home / 19,711.81-27,213.47-13,670.83

Finding the Fourth Proportional to 19,711.81, 27,213.47 and 13,670.83

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Solution

The fourth proportional to 19,711.81, 27,213.47 and 13,670.83 is: 18,873.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.81 : 27,213.47 = 13,670.83 : x
  2. Step 2: Convert to fraction form
    19,711.81/27,213.47 = 13,670.83/x
  3. Step 3: Cross multiply
    19,711.81x = 27,213.47 × 13,670.83
  4. Step 4: Simplify right side
    19,711.81x = 372,030,722.08
  5. Step 5: Solve for x
    x = 372,030,722.08/19,711.81
  6. Step 6: Final answer
    x = 18,873.49

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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.