Home / 21,307.88-29,374.13-14,914.68

Finding the Fourth Proportional to 21,307.88, 29,374.13 and 14,914.68

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Solution

The fourth proportional to 21,307.88, 29,374.13 and 14,914.68 is: 20,560.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.88 : 29,374.13 = 14,914.68 : x
  2. Step 2: Convert to fraction form
    21,307.88/29,374.13 = 14,914.68/x
  3. Step 3: Cross multiply
    21,307.88x = 29,374.13 × 14,914.68
  4. Step 4: Simplify right side
    21,307.88x = 438,105,674.66
  5. Step 5: Solve for x
    x = 438,105,674.66/21,307.88
  6. Step 6: Final answer
    x = 20,560.74

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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.