Home / 21,288.32-31,886.00-17,548.55

Finding the Fourth Proportional to 21,288.32, 31,886.00 and 17,548.55

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Solution

The fourth proportional to 21,288.32, 31,886.00 and 17,548.55 is: 26,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.32 : 31,886.00 = 17,548.55 : x
  2. Step 2: Convert to fraction form
    21,288.32/31,886.00 = 17,548.55/x
  3. Step 3: Cross multiply
    21,288.32x = 31,886.00 × 17,548.55
  4. Step 4: Simplify right side
    21,288.32x = 559,553,102.22
  5. Step 5: Solve for x
    x = 559,553,102.22/21,288.32
  6. Step 6: Final answer
    x = 26,284.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.