Home / 13,513.14-18,656.36-9,271.17

Finding the Fourth Proportional to 13,513.14, 18,656.36 and 9,271.17

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Solution

The fourth proportional to 13,513.14, 18,656.36 and 9,271.17 is: 12,799.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.14 : 18,656.36 = 9,271.17 : x
  2. Step 2: Convert to fraction form
    13,513.14/18,656.36 = 9,271.17/x
  3. Step 3: Cross multiply
    13,513.14x = 18,656.36 × 9,271.17
  4. Step 4: Simplify right side
    13,513.14x = 172,966,238.79
  5. Step 5: Solve for x
    x = 172,966,238.79/13,513.14
  6. Step 6: Final answer
    x = 12,799.86

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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.