Home / 18,870.29-28,294.50-7,764.43

Finding the Fourth Proportional to 18,870.29, 28,294.50 and 7,764.43

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Solution

The fourth proportional to 18,870.29, 28,294.50 and 7,764.43 is: 11,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.29 : 28,294.50 = 7,764.43 : x
  2. Step 2: Convert to fraction form
    18,870.29/28,294.50 = 7,764.43/x
  3. Step 3: Cross multiply
    18,870.29x = 28,294.50 × 7,764.43
  4. Step 4: Simplify right side
    18,870.29x = 219,690,664.64
  5. Step 5: Solve for x
    x = 219,690,664.64/18,870.29
  6. Step 6: Final answer
    x = 11,642.15

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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.