Home / 13,531.57-18,681.64-8,500.10

Finding the Fourth Proportional to 13,531.57, 18,681.64 and 8,500.10

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Solution

The fourth proportional to 13,531.57, 18,681.64 and 8,500.10 is: 11,735.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.57 : 18,681.64 = 8,500.10 : x
  2. Step 2: Convert to fraction form
    13,531.57/18,681.64 = 8,500.10/x
  3. Step 3: Cross multiply
    13,531.57x = 18,681.64 × 8,500.10
  4. Step 4: Simplify right side
    13,531.57x = 158,795,693.51
  5. Step 5: Solve for x
    x = 158,795,693.51/13,531.57
  6. Step 6: Final answer
    x = 11,735.20

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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.