Home / 28,888.56-39,883.40-18,287.28

Finding the Fourth Proportional to 28,888.56, 39,883.40 and 18,287.28

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Solution

The fourth proportional to 28,888.56, 39,883.40 and 18,287.28 is: 25,247.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,888.56 : 39,883.40 = 18,287.28 : x
  2. Step 2: Convert to fraction form
    28,888.56/39,883.40 = 18,287.28/x
  3. Step 3: Cross multiply
    28,888.56x = 39,883.40 × 18,287.28
  4. Step 4: Simplify right side
    28,888.56x = 729,358,903.15
  5. Step 5: Solve for x
    x = 729,358,903.15/28,888.56
  6. Step 6: Final answer
    x = 25,247.33

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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.