Home / 19,868.18-29,774.30-15,689.78

Finding the Fourth Proportional to 19,868.18, 29,774.30 and 15,689.78

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Solution

The fourth proportional to 19,868.18, 29,774.30 and 15,689.78 is: 23,512.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.18 : 29,774.30 = 15,689.78 : x
  2. Step 2: Convert to fraction form
    19,868.18/29,774.30 = 15,689.78/x
  3. Step 3: Cross multiply
    19,868.18x = 29,774.30 × 15,689.78
  4. Step 4: Simplify right side
    19,868.18x = 467,152,216.65
  5. Step 5: Solve for x
    x = 467,152,216.65/19,868.18
  6. Step 6: Final answer
    x = 23,512.58

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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.