Home / 19,920.42-29,852.67-15,742.05

Finding the Fourth Proportional to 19,920.42, 29,852.67 and 15,742.05

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Solution

The fourth proportional to 19,920.42, 29,852.67 and 15,742.05 is: 23,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.42 : 29,852.67 = 15,742.05 : x
  2. Step 2: Convert to fraction form
    19,920.42/29,852.67 = 15,742.05/x
  3. Step 3: Cross multiply
    19,920.42x = 29,852.67 × 15,742.05
  4. Step 4: Simplify right side
    19,920.42x = 469,942,223.77
  5. Step 5: Solve for x
    x = 469,942,223.77/19,920.42
  6. Step 6: Final answer
    x = 23,590.98

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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.