Home / 13,261.91-18,298.68-7,886.24

Finding the Fourth Proportional to 13,261.91, 18,298.68 and 7,886.24

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Solution

The fourth proportional to 13,261.91, 18,298.68 and 7,886.24 is: 10,881.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.91 : 18,298.68 = 7,886.24 : x
  2. Step 2: Convert to fraction form
    13,261.91/18,298.68 = 7,886.24/x
  3. Step 3: Cross multiply
    13,261.91x = 18,298.68 × 7,886.24
  4. Step 4: Simplify right side
    13,261.91x = 144,307,782.16
  5. Step 5: Solve for x
    x = 144,307,782.16/13,261.91
  6. Step 6: Final answer
    x = 10,881.37

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Half scale
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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.