Home / 18,386.36-25,372.88-11,312.60

Finding the Fourth Proportional to 18,386.36, 25,372.88 and 11,312.60

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Solution

The fourth proportional to 18,386.36, 25,372.88 and 11,312.60 is: 15,611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.36 : 25,372.88 = 11,312.60 : x
  2. Step 2: Convert to fraction form
    18,386.36/25,372.88 = 11,312.60/x
  3. Step 3: Cross multiply
    18,386.36x = 25,372.88 × 11,312.60
  4. Step 4: Simplify right side
    18,386.36x = 287,033,242.29
  5. Step 5: Solve for x
    x = 287,033,242.29/18,386.36
  6. Step 6: Final answer
    x = 15,611.21

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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.