Home / 21,067.08-31,463.88-19,088.79

Finding the Fourth Proportional to 21,067.08, 31,463.88 and 19,088.79

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Solution

The fourth proportional to 21,067.08, 31,463.88 and 19,088.79 is: 28,509.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.08 : 31,463.88 = 19,088.79 : x
  2. Step 2: Convert to fraction form
    21,067.08/31,463.88 = 19,088.79/x
  3. Step 3: Cross multiply
    21,067.08x = 31,463.88 × 19,088.79
  4. Step 4: Simplify right side
    21,067.08x = 600,607,397.91
  5. Step 5: Solve for x
    x = 600,607,397.91/21,067.08
  6. Step 6: Final answer
    x = 28,509.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.