Home / 13,705.02-18,880.56-11,299.32

Finding the Fourth Proportional to 13,705.02, 18,880.56 and 11,299.32

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Solution

The fourth proportional to 13,705.02, 18,880.56 and 11,299.32 is: 15,566.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.02 : 18,880.56 = 11,299.32 : x
  2. Step 2: Convert to fraction form
    13,705.02/18,880.56 = 11,299.32/x
  3. Step 3: Cross multiply
    13,705.02x = 18,880.56 × 11,299.32
  4. Step 4: Simplify right side
    13,705.02x = 213,337,489.22
  5. Step 5: Solve for x
    x = 213,337,489.22/13,705.02
  6. Step 6: Final answer
    x = 15,566.38

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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.