Home / 15,513.31-21,408.81-9,548.47

Finding the Fourth Proportional to 15,513.31, 21,408.81 and 9,548.47

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Solution

The fourth proportional to 15,513.31, 21,408.81 and 9,548.47 is: 13,177.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.31 : 21,408.81 = 9,548.47 : x
  2. Step 2: Convert to fraction form
    15,513.31/21,408.81 = 9,548.47/x
  3. Step 3: Cross multiply
    15,513.31x = 21,408.81 × 9,548.47
  4. Step 4: Simplify right side
    15,513.31x = 204,421,272.98
  5. Step 5: Solve for x
    x = 204,421,272.98/15,513.31
  6. Step 6: Final answer
    x = 13,177.16

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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.