Home / 19,931.42-27,507.52-10,979.84

Finding the Fourth Proportional to 19,931.42, 27,507.52 and 10,979.84

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Solution

The fourth proportional to 19,931.42, 27,507.52 and 10,979.84 is: 15,153.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.42 : 27,507.52 = 10,979.84 : x
  2. Step 2: Convert to fraction form
    19,931.42/27,507.52 = 10,979.84/x
  3. Step 3: Cross multiply
    19,931.42x = 27,507.52 × 10,979.84
  4. Step 4: Simplify right side
    19,931.42x = 302,028,168.40
  5. Step 5: Solve for x
    x = 302,028,168.40/19,931.42
  6. Step 6: Final answer
    x = 15,153.37

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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.