Home / 19,913.12-29,848.84-7,428.12

Finding the Fourth Proportional to 19,913.12, 29,848.84 and 7,428.12

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Solution

The fourth proportional to 19,913.12, 29,848.84 and 7,428.12 is: 11,134.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.12 : 29,848.84 = 7,428.12 : x
  2. Step 2: Convert to fraction form
    19,913.12/29,848.84 = 7,428.12/x
  3. Step 3: Cross multiply
    19,913.12x = 29,848.84 × 7,428.12
  4. Step 4: Simplify right side
    19,913.12x = 221,720,765.38
  5. Step 5: Solve for x
    x = 221,720,765.38/19,913.12
  6. Step 6: Final answer
    x = 11,134.41

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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.