Home / 15,545.37-21,455.93-10,240.65

Finding the Fourth Proportional to 15,545.37, 21,455.93 and 10,240.65

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Solution

The fourth proportional to 15,545.37, 21,455.93 and 10,240.65 is: 14,134.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.37 : 21,455.93 = 10,240.65 : x
  2. Step 2: Convert to fraction form
    15,545.37/21,455.93 = 10,240.65/x
  3. Step 3: Cross multiply
    15,545.37x = 21,455.93 × 10,240.65
  4. Step 4: Simplify right side
    15,545.37x = 219,722,669.55
  5. Step 5: Solve for x
    x = 219,722,669.55/15,545.37
  6. Step 6: Final answer
    x = 14,134.28

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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.