Home / 21,575.84-29,772.62-15,913.68

Finding the Fourth Proportional to 21,575.84, 29,772.62 and 15,913.68

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Solution

The fourth proportional to 21,575.84, 29,772.62 and 15,913.68 is: 21,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575.84 : 29,772.62 = 15,913.68 : x
  2. Step 2: Convert to fraction form
    21,575.84/29,772.62 = 15,913.68/x
  3. Step 3: Cross multiply
    21,575.84x = 29,772.62 × 15,913.68
  4. Step 4: Simplify right side
    21,575.84x = 473,791,947.44
  5. Step 5: Solve for x
    x = 473,791,947.44/21,575.84
  6. Step 6: Final answer
    x = 21,959.37

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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.