Home / 21,220.58-29,264.28-16,175.90

Finding the Fourth Proportional to 21,220.58, 29,264.28 and 16,175.90

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Solution

The fourth proportional to 21,220.58, 29,264.28 and 16,175.90 is: 22,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.58 : 29,264.28 = 16,175.90 : x
  2. Step 2: Convert to fraction form
    21,220.58/29,264.28 = 16,175.90/x
  3. Step 3: Cross multiply
    21,220.58x = 29,264.28 × 16,175.90
  4. Step 4: Simplify right side
    21,220.58x = 473,376,066.85
  5. Step 5: Solve for x
    x = 473,376,066.85/21,220.58
  6. Step 6: Final answer
    x = 22,307.40

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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.