Home / 19,887.74-29,886.28-18,587.38

Finding the Fourth Proportional to 19,887.74, 29,886.28 and 18,587.38

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Solution

The fourth proportional to 19,887.74, 29,886.28 and 18,587.38 is: 27,932.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.74 : 29,886.28 = 18,587.38 : x
  2. Step 2: Convert to fraction form
    19,887.74/29,886.28 = 18,587.38/x
  3. Step 3: Cross multiply
    19,887.74x = 29,886.28 × 18,587.38
  4. Step 4: Simplify right side
    19,887.74x = 555,507,764.33
  5. Step 5: Solve for x
    x = 555,507,764.33/19,887.74
  6. Step 6: Final answer
    x = 27,932.18

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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.