Home / 15,868.25-21,898.19-8,795.74

Finding the Fourth Proportional to 15,868.25, 21,898.19 and 8,795.74

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Solution

The fourth proportional to 15,868.25, 21,898.19 and 8,795.74 is: 12,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.25 : 21,898.19 = 8,795.74 : x
  2. Step 2: Convert to fraction form
    15,868.25/21,898.19 = 8,795.74/x
  3. Step 3: Cross multiply
    15,868.25x = 21,898.19 × 8,795.74
  4. Step 4: Simplify right side
    15,868.25x = 192,610,785.71
  5. Step 5: Solve for x
    x = 192,610,785.71/15,868.25
  6. Step 6: Final answer
    x = 12,138.12

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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.