Home / 15,549.31-21,457.94-8,475.78

Finding the Fourth Proportional to 15,549.31, 21,457.94 and 8,475.78

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Solution

The fourth proportional to 15,549.31, 21,457.94 and 8,475.78 is: 11,696.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.31 : 21,457.94 = 8,475.78 : x
  2. Step 2: Convert to fraction form
    15,549.31/21,457.94 = 8,475.78/x
  3. Step 3: Cross multiply
    15,549.31x = 21,457.94 × 8,475.78
  4. Step 4: Simplify right side
    15,549.31x = 181,872,736.31
  5. Step 5: Solve for x
    x = 181,872,736.31/15,549.31
  6. Step 6: Final answer
    x = 11,696.52

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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.