Home / 15,356.43-21,192.29-8,642.30

Finding the Fourth Proportional to 15,356.43, 21,192.29 and 8,642.30

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Solution

The fourth proportional to 15,356.43, 21,192.29 and 8,642.30 is: 11,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.43 : 21,192.29 = 8,642.30 : x
  2. Step 2: Convert to fraction form
    15,356.43/21,192.29 = 8,642.30/x
  3. Step 3: Cross multiply
    15,356.43x = 21,192.29 × 8,642.30
  4. Step 4: Simplify right side
    15,356.43x = 183,150,011.10
  5. Step 5: Solve for x
    x = 183,150,011.10/15,356.43
  6. Step 6: Final answer
    x = 11,926.60

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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.