Home / 15,640.49-21,585.69-8,927.09

Finding the Fourth Proportional to 15,640.49, 21,585.69 and 8,927.09

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Solution

The fourth proportional to 15,640.49, 21,585.69 and 8,927.09 is: 12,320.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.49 : 21,585.69 = 8,927.09 : x
  2. Step 2: Convert to fraction form
    15,640.49/21,585.69 = 8,927.09/x
  3. Step 3: Cross multiply
    15,640.49x = 21,585.69 × 8,927.09
  4. Step 4: Simplify right side
    15,640.49x = 192,697,309.65
  5. Step 5: Solve for x
    x = 192,697,309.65/15,640.49
  6. Step 6: Final answer
    x = 12,320.41

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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.