Home / 13,266.16-18,308.18-7,887.16

Finding the Fourth Proportional to 13,266.16, 18,308.18 and 7,887.16

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Solution

The fourth proportional to 13,266.16, 18,308.18 and 7,887.16 is: 10,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.16 : 18,308.18 = 7,887.16 : x
  2. Step 2: Convert to fraction form
    13,266.16/18,308.18 = 7,887.16/x
  3. Step 3: Cross multiply
    13,266.16x = 18,308.18 × 7,887.16
  4. Step 4: Simplify right side
    13,266.16x = 144,399,505.53
  5. Step 5: Solve for x
    x = 144,399,505.53/13,266.16
  6. Step 6: Final answer
    x = 10,884.80

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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.