Home / 15,551.73-21,461.36-8,478.14

Finding the Fourth Proportional to 15,551.73, 21,461.36 and 8,478.14

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Solution

The fourth proportional to 15,551.73, 21,461.36 and 8,478.14 is: 11,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.73 : 21,461.36 = 8,478.14 : x
  2. Step 2: Convert to fraction form
    15,551.73/21,461.36 = 8,478.14/x
  3. Step 3: Cross multiply
    15,551.73x = 21,461.36 × 8,478.14
  4. Step 4: Simplify right side
    15,551.73x = 181,952,264.97
  5. Step 5: Solve for x
    x = 181,952,264.97/15,551.73
  6. Step 6: Final answer
    x = 11,699.81

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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.