Home / 12,248.90-18,387-11,445.80

Finding the Fourth Proportional to 12,248.90, 18,387 and 11,445.80

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Solution

The fourth proportional to 12,248.90, 18,387 and 11,445.80 is: 17,181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248.90 : 18,387 = 11,445.80 : x
  2. Step 2: Convert to fraction form
    12,248.90/18,387 = 11,445.80/x
  3. Step 3: Cross multiply
    12,248.90x = 18,387 × 11,445.80
  4. Step 4: Simplify right side
    12,248.90x = 210,453,924.60
  5. Step 5: Solve for x
    x = 210,453,924.60/12,248.90
  6. Step 6: Final answer
    x = 17,181.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.