Home / 15,643.02-21,588.91-8,929.65

Finding the Fourth Proportional to 15,643.02, 21,588.91 and 8,929.65

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Solution

The fourth proportional to 15,643.02, 21,588.91 and 8,929.65 is: 12,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.02 : 21,588.91 = 8,929.65 : x
  2. Step 2: Convert to fraction form
    15,643.02/21,588.91 = 8,929.65/x
  3. Step 3: Cross multiply
    15,643.02x = 21,588.91 × 8,929.65
  4. Step 4: Simplify right side
    15,643.02x = 192,781,519.05
  5. Step 5: Solve for x
    x = 192,781,519.05/15,643.02
  6. Step 6: Final answer
    x = 12,323.81

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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.