Home / 28,100.39-38,778.08-15,353.30

Finding the Fourth Proportional to 28,100.39, 38,778.08 and 15,353.30

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Solution

The fourth proportional to 28,100.39, 38,778.08 and 15,353.30 is: 21,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.39 : 38,778.08 = 15,353.30 : x
  2. Step 2: Convert to fraction form
    28,100.39/38,778.08 = 15,353.30/x
  3. Step 3: Cross multiply
    28,100.39x = 38,778.08 × 15,353.30
  4. Step 4: Simplify right side
    28,100.39x = 595,371,301.77
  5. Step 5: Solve for x
    x = 595,371,301.77/28,100.39
  6. Step 6: Final answer
    x = 21,187.30

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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.