Home / 18,870.65-28,265.67-14,378.39

Finding the Fourth Proportional to 18,870.65, 28,265.67 and 14,378.39

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Solution

The fourth proportional to 18,870.65, 28,265.67 and 14,378.39 is: 21,536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.65 : 28,265.67 = 14,378.39 : x
  2. Step 2: Convert to fraction form
    18,870.65/28,265.67 = 14,378.39/x
  3. Step 3: Cross multiply
    18,870.65x = 28,265.67 × 14,378.39
  4. Step 4: Simplify right side
    18,870.65x = 406,414,826.87
  5. Step 5: Solve for x
    x = 406,414,826.87/18,870.65
  6. Step 6: Final answer
    x = 21,536.87

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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.