Home / 21,267.42-29,333.79-15,603.90

Finding the Fourth Proportional to 21,267.42, 29,333.79 and 15,603.90

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Solution

The fourth proportional to 21,267.42, 29,333.79 and 15,603.90 is: 21,522.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.42 : 29,333.79 = 15,603.90 : x
  2. Step 2: Convert to fraction form
    21,267.42/29,333.79 = 15,603.90/x
  3. Step 3: Cross multiply
    21,267.42x = 29,333.79 × 15,603.90
  4. Step 4: Simplify right side
    21,267.42x = 457,721,525.78
  5. Step 5: Solve for x
    x = 457,721,525.78/21,267.42
  6. Step 6: Final answer
    x = 21,522.19

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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.