Home / 15,869.16-21,898.78-8,795.40

Finding the Fourth Proportional to 15,869.16, 21,898.78 and 8,795.40

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Solution

The fourth proportional to 15,869.16, 21,898.78 and 8,795.40 is: 12,137.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.16 : 21,898.78 = 8,795.40 : x
  2. Step 2: Convert to fraction form
    15,869.16/21,898.78 = 8,795.40/x
  3. Step 3: Cross multiply
    15,869.16x = 21,898.78 × 8,795.40
  4. Step 4: Simplify right side
    15,869.16x = 192,608,529.61
  5. Step 5: Solve for x
    x = 192,608,529.61/15,869.16
  6. Step 6: Final answer
    x = 12,137.29

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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.