Home / 28,585.91-42,870.67-19,876.19

Finding the Fourth Proportional to 28,585.91, 42,870.67 and 19,876.19

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Solution

The fourth proportional to 28,585.91, 42,870.67 and 19,876.19 is: 29,808.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.91 : 42,870.67 = 19,876.19 : x
  2. Step 2: Convert to fraction form
    28,585.91/42,870.67 = 19,876.19/x
  3. Step 3: Cross multiply
    28,585.91x = 42,870.67 × 19,876.19
  4. Step 4: Simplify right side
    28,585.91x = 852,105,318.30
  5. Step 5: Solve for x
    x = 852,105,318.30/28,585.91
  6. Step 6: Final answer
    x = 29,808.58

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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.