Home / 21,215.88-29,275.70-12,266.24

Finding the Fourth Proportional to 21,215.88, 29,275.70 and 12,266.24

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Solution

The fourth proportional to 21,215.88, 29,275.70 and 12,266.24 is: 16,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.88 : 29,275.70 = 12,266.24 : x
  2. Step 2: Convert to fraction form
    21,215.88/29,275.70 = 12,266.24/x
  3. Step 3: Cross multiply
    21,215.88x = 29,275.70 × 12,266.24
  4. Step 4: Simplify right side
    21,215.88x = 359,102,762.37
  5. Step 5: Solve for x
    x = 359,102,762.37/21,215.88
  6. Step 6: Final answer
    x = 16,926.13

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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.