Home / 10,005.21-15,009.64-3,432.06

Finding the Fourth Proportional to 10,005.21, 15,009.64 and 3,432.06

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Solution

The fourth proportional to 10,005.21, 15,009.64 and 3,432.06 is: 5,148.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.21 : 15,009.64 = 3,432.06 : x
  2. Step 2: Convert to fraction form
    10,005.21/15,009.64 = 3,432.06/x
  3. Step 3: Cross multiply
    10,005.21x = 15,009.64 × 3,432.06
  4. Step 4: Simplify right side
    10,005.21x = 51,513,976.48
  5. Step 5: Solve for x
    x = 51,513,976.48/10,005.21
  6. Step 6: Final answer
    x = 5,148.72

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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.