Home / 15,357.48-21,194.43-8,643.78

Finding the Fourth Proportional to 15,357.48, 21,194.43 and 8,643.78

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Solution

The fourth proportional to 15,357.48, 21,194.43 and 8,643.78 is: 11,929.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,357.48 : 21,194.43 = 8,643.78 : x
  2. Step 2: Convert to fraction form
    15,357.48/21,194.43 = 8,643.78/x
  3. Step 3: Cross multiply
    15,357.48x = 21,194.43 × 8,643.78
  4. Step 4: Simplify right side
    15,357.48x = 183,199,990.15
  5. Step 5: Solve for x
    x = 183,199,990.15/15,357.48
  6. Step 6: Final answer
    x = 11,929.04

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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.