Home / 21,545.01-29,728.47-11,983.65

Finding the Fourth Proportional to 21,545.01, 29,728.47 and 11,983.65

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Solution

The fourth proportional to 21,545.01, 29,728.47 and 11,983.65 is: 16,535.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.01 : 29,728.47 = 11,983.65 : x
  2. Step 2: Convert to fraction form
    21,545.01/29,728.47 = 11,983.65/x
  3. Step 3: Cross multiply
    21,545.01x = 29,728.47 × 11,983.65
  4. Step 4: Simplify right side
    21,545.01x = 356,255,579.52
  5. Step 5: Solve for x
    x = 356,255,579.52/21,545.01
  6. Step 6: Final answer
    x = 16,535.41

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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.