Home / 21,017.52-29,006.21-15,703.11

Finding the Fourth Proportional to 21,017.52, 29,006.21 and 15,703.11

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Solution

The fourth proportional to 21,017.52, 29,006.21 and 15,703.11 is: 21,671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017.52 : 29,006.21 = 15,703.11 : x
  2. Step 2: Convert to fraction form
    21,017.52/29,006.21 = 15,703.11/x
  3. Step 3: Cross multiply
    21,017.52x = 29,006.21 × 15,703.11
  4. Step 4: Simplify right side
    21,017.52x = 455,487,706.31
  5. Step 5: Solve for x
    x = 455,487,706.31/21,017.52
  6. Step 6: Final answer
    x = 21,671.81

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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.