Home / 28,449.72-39,231.30-18,886.14

Finding the Fourth Proportional to 28,449.72, 39,231.30 and 18,886.14

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Solution

The fourth proportional to 28,449.72, 39,231.30 and 18,886.14 is: 26,043.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.72 : 39,231.30 = 18,886.14 : x
  2. Step 2: Convert to fraction form
    28,449.72/39,231.30 = 18,886.14/x
  3. Step 3: Cross multiply
    28,449.72x = 39,231.30 × 18,886.14
  4. Step 4: Simplify right side
    28,449.72x = 740,927,824.18
  5. Step 5: Solve for x
    x = 740,927,824.18/28,449.72
  6. Step 6: Final answer
    x = 26,043.41

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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.