Home / 21,254.42-29,330.31-11,822.78

Finding the Fourth Proportional to 21,254.42, 29,330.31 and 11,822.78

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Solution

The fourth proportional to 21,254.42, 29,330.31 and 11,822.78 is: 16,315.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.42 : 29,330.31 = 11,822.78 : x
  2. Step 2: Convert to fraction form
    21,254.42/29,330.31 = 11,822.78/x
  3. Step 3: Cross multiply
    21,254.42x = 29,330.31 × 11,822.78
  4. Step 4: Simplify right side
    21,254.42x = 346,765,802.46
  5. Step 5: Solve for x
    x = 346,765,802.46/21,254.42
  6. Step 6: Final answer
    x = 16,315.00

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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.