Home / 15,148.03-20,901.12-9,178.54

Finding the Fourth Proportional to 15,148.03, 20,901.12 and 9,178.54

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Solution

The fourth proportional to 15,148.03, 20,901.12 and 9,178.54 is: 12,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.03 : 20,901.12 = 9,178.54 : x
  2. Step 2: Convert to fraction form
    15,148.03/20,901.12 = 9,178.54/x
  3. Step 3: Cross multiply
    15,148.03x = 20,901.12 × 9,178.54
  4. Step 4: Simplify right side
    15,148.03x = 191,841,765.96
  5. Step 5: Solve for x
    x = 191,841,765.96/15,148.03
  6. Step 6: Final answer
    x = 12,664.47

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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.