Home / 21,307.46-29,400.77-12,351.29

Finding the Fourth Proportional to 21,307.46, 29,400.77 and 12,351.29

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Solution

The fourth proportional to 21,307.46, 29,400.77 and 12,351.29 is: 17,042.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.46 : 29,400.77 = 12,351.29 : x
  2. Step 2: Convert to fraction form
    21,307.46/29,400.77 = 12,351.29/x
  3. Step 3: Cross multiply
    21,307.46x = 29,400.77 × 12,351.29
  4. Step 4: Simplify right side
    21,307.46x = 363,137,320.37
  5. Step 5: Solve for x
    x = 363,137,320.37/21,307.46
  6. Step 6: Final answer
    x = 17,042.74

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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.