Home / 19,931.91-27,507.29-10,979.42

Finding the Fourth Proportional to 19,931.91, 27,507.29 and 10,979.42

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Solution

The fourth proportional to 19,931.91, 27,507.29 and 10,979.42 is: 15,152.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.91 : 27,507.29 = 10,979.42 : x
  2. Step 2: Convert to fraction form
    19,931.91/27,507.29 = 10,979.42/x
  3. Step 3: Cross multiply
    19,931.91x = 27,507.29 × 10,979.42
  4. Step 4: Simplify right side
    19,931.91x = 302,013,897.54
  5. Step 5: Solve for x
    x = 302,013,897.54/19,931.91
  6. Step 6: Final answer
    x = 15,152.28

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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.