Home / 21,603.85-32,398.35-10,503.39

Finding the Fourth Proportional to 21,603.85, 32,398.35 and 10,503.39

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Solution

The fourth proportional to 21,603.85, 32,398.35 and 10,503.39 is: 15,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.85 : 32,398.35 = 10,503.39 : x
  2. Step 2: Convert to fraction form
    21,603.85/32,398.35 = 10,503.39/x
  3. Step 3: Cross multiply
    21,603.85x = 32,398.35 × 10,503.39
  4. Step 4: Simplify right side
    21,603.85x = 340,292,505.41
  5. Step 5: Solve for x
    x = 340,292,505.41/21,603.85
  6. Step 6: Final answer
    x = 15,751.48

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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.