Home / 21,587.72-29,782.22-15,935.94

Finding the Fourth Proportional to 21,587.72, 29,782.22 and 15,935.94

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Solution

The fourth proportional to 21,587.72, 29,782.22 and 15,935.94 is: 21,985.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,587.72 : 29,782.22 = 15,935.94 : x
  2. Step 2: Convert to fraction form
    21,587.72/29,782.22 = 15,935.94/x
  3. Step 3: Cross multiply
    21,587.72x = 29,782.22 × 15,935.94
  4. Step 4: Simplify right side
    21,587.72x = 474,607,591.31
  5. Step 5: Solve for x
    x = 474,607,591.31/21,587.72
  6. Step 6: Final answer
    x = 21,985.08

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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.