Home / 19,672.07-29,482.18-7,978.91

Finding the Fourth Proportional to 19,672.07, 29,482.18 and 7,978.91

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Solution

The fourth proportional to 19,672.07, 29,482.18 and 7,978.91 is: 11,957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.07 : 29,482.18 = 7,978.91 : x
  2. Step 2: Convert to fraction form
    19,672.07/29,482.18 = 7,978.91/x
  3. Step 3: Cross multiply
    19,672.07x = 29,482.18 × 7,978.91
  4. Step 4: Simplify right side
    19,672.07x = 235,235,493.47
  5. Step 5: Solve for x
    x = 235,235,493.47/19,672.07
  6. Step 6: Final answer
    x = 11,957.84

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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.