Home / 21,298.62-32,107.39-19,871.40

Finding the Fourth Proportional to 21,298.62, 32,107.39 and 19,871.40

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Solution

The fourth proportional to 21,298.62, 32,107.39 and 19,871.40 is: 29,955.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.62 : 32,107.39 = 19,871.40 : x
  2. Step 2: Convert to fraction form
    21,298.62/32,107.39 = 19,871.40/x
  3. Step 3: Cross multiply
    21,298.62x = 32,107.39 × 19,871.40
  4. Step 4: Simplify right side
    21,298.62x = 638,018,789.65
  5. Step 5: Solve for x
    x = 638,018,789.65/21,298.62
  6. Step 6: Final answer
    x = 29,955.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.