Home / 15,381.19-21,087.60-15,100.93

Finding the Fourth Proportional to 15,381.19, 21,087.60 and 15,100.93

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Solution

The fourth proportional to 15,381.19, 21,087.60 and 15,100.93 is: 20,703.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.19 : 21,087.60 = 15,100.93 : x
  2. Step 2: Convert to fraction form
    15,381.19/21,087.60 = 15,100.93/x
  3. Step 3: Cross multiply
    15,381.19x = 21,087.60 × 15,100.93
  4. Step 4: Simplify right side
    15,381.19x = 318,442,371.47
  5. Step 5: Solve for x
    x = 318,442,371.47/15,381.19
  6. Step 6: Final answer
    x = 20,703.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.