Home / 19,908.46-29,860.38-7,428.92

Finding the Fourth Proportional to 19,908.46, 29,860.38 and 7,428.92

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Solution

The fourth proportional to 19,908.46, 29,860.38 and 7,428.92 is: 11,142.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,908.46 : 29,860.38 = 7,428.92 : x
  2. Step 2: Convert to fraction form
    19,908.46/29,860.38 = 7,428.92/x
  3. Step 3: Cross multiply
    19,908.46x = 29,860.38 × 7,428.92
  4. Step 4: Simplify right side
    19,908.46x = 221,830,374.19
  5. Step 5: Solve for x
    x = 221,830,374.19/19,908.46
  6. Step 6: Final answer
    x = 11,142.52

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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.