Home / 21,099.52-31,640.05-10,009.37

Finding the Fourth Proportional to 21,099.52, 31,640.05 and 10,009.37

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Solution

The fourth proportional to 21,099.52, 31,640.05 and 10,009.37 is: 15,009.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.52 : 31,640.05 = 10,009.37 : x
  2. Step 2: Convert to fraction form
    21,099.52/31,640.05 = 10,009.37/x
  3. Step 3: Cross multiply
    21,099.52x = 31,640.05 × 10,009.37
  4. Step 4: Simplify right side
    21,099.52x = 316,697,058.88
  5. Step 5: Solve for x
    x = 316,697,058.88/21,099.52
  6. Step 6: Final answer
    x = 15,009.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.