Home / 21,449.61-29,599.16-11,889.18

Finding the Fourth Proportional to 21,449.61, 29,599.16 and 11,889.18

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Solution

The fourth proportional to 21,449.61, 29,599.16 and 11,889.18 is: 16,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449.61 : 29,599.16 = 11,889.18 : x
  2. Step 2: Convert to fraction form
    21,449.61/29,599.16 = 11,889.18/x
  3. Step 3: Cross multiply
    21,449.61x = 29,599.16 × 11,889.18
  4. Step 4: Simplify right side
    21,449.61x = 351,909,681.64
  5. Step 5: Solve for x
    x = 351,909,681.64/21,449.61
  6. Step 6: Final answer
    x = 16,406.34

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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.