Home / 13,513.88-18,657.38-9,271.91

Finding the Fourth Proportional to 13,513.88, 18,657.38 and 9,271.91

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Solution

The fourth proportional to 13,513.88, 18,657.38 and 9,271.91 is: 12,800.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.88 : 18,657.38 = 9,271.91 : x
  2. Step 2: Convert to fraction form
    13,513.88/18,657.38 = 9,271.91/x
  3. Step 3: Cross multiply
    13,513.88x = 18,657.38 × 9,271.91
  4. Step 4: Simplify right side
    13,513.88x = 172,989,618.02
  5. Step 5: Solve for x
    x = 172,989,618.02/13,513.88
  6. Step 6: Final answer
    x = 12,800.88

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Double scale
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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.