Home / 15,424.39-21,285.36-10,118.89

Finding the Fourth Proportional to 15,424.39, 21,285.36 and 10,118.89

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Solution

The fourth proportional to 15,424.39, 21,285.36 and 10,118.89 is: 13,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.39 : 21,285.36 = 10,118.89 : x
  2. Step 2: Convert to fraction form
    15,424.39/21,285.36 = 10,118.89/x
  3. Step 3: Cross multiply
    15,424.39x = 21,285.36 × 10,118.89
  4. Step 4: Simplify right side
    15,424.39x = 215,384,216.45
  5. Step 5: Solve for x
    x = 215,384,216.45/15,424.39
  6. Step 6: Final answer
    x = 13,963.87

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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.