Home / 15,870.08-21,902.31-8,797.87

Finding the Fourth Proportional to 15,870.08, 21,902.31 and 8,797.87

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Solution

The fourth proportional to 15,870.08, 21,902.31 and 8,797.87 is: 12,141.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,870.08 : 21,902.31 = 8,797.87 : x
  2. Step 2: Convert to fraction form
    15,870.08/21,902.31 = 8,797.87/x
  3. Step 3: Cross multiply
    15,870.08x = 21,902.31 × 8,797.87
  4. Step 4: Simplify right side
    15,870.08x = 192,693,522.58
  5. Step 5: Solve for x
    x = 192,693,522.58/15,870.08
  6. Step 6: Final answer
    x = 12,141.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.