Home / 19,931.08-27,504.53-10,979.42

Finding the Fourth Proportional to 19,931.08, 27,504.53 and 10,979.42

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Solution

The fourth proportional to 19,931.08, 27,504.53 and 10,979.42 is: 15,151.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.08 : 27,504.53 = 10,979.42 : x
  2. Step 2: Convert to fraction form
    19,931.08/27,504.53 = 10,979.42/x
  3. Step 3: Cross multiply
    19,931.08x = 27,504.53 × 10,979.42
  4. Step 4: Simplify right side
    19,931.08x = 301,983,635.53
  5. Step 5: Solve for x
    x = 301,983,635.53/19,931.08
  6. Step 6: Final answer
    x = 15,151.39

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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.