Home / 19,110.84-28,658.96-7,421.34

Finding the Fourth Proportional to 19,110.84, 28,658.96 and 7,421.34

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Solution

The fourth proportional to 19,110.84, 28,658.96 and 7,421.34 is: 11,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,110.84 : 28,658.96 = 7,421.34 : x
  2. Step 2: Convert to fraction form
    19,110.84/28,658.96 = 7,421.34/x
  3. Step 3: Cross multiply
    19,110.84x = 28,658.96 × 7,421.34
  4. Step 4: Simplify right side
    19,110.84x = 212,687,886.21
  5. Step 5: Solve for x
    x = 212,687,886.21/19,110.84
  6. Step 6: Final answer
    x = 11,129.18

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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.