Home / 15,117.44-20,856.53-9,146.93

Finding the Fourth Proportional to 15,117.44, 20,856.53 and 9,146.93

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Solution

The fourth proportional to 15,117.44, 20,856.53 and 9,146.93 is: 12,619.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.44 : 20,856.53 = 9,146.93 : x
  2. Step 2: Convert to fraction form
    15,117.44/20,856.53 = 9,146.93/x
  3. Step 3: Cross multiply
    15,117.44x = 20,856.53 × 9,146.93
  4. Step 4: Simplify right side
    15,117.44x = 190,773,138.54
  5. Step 5: Solve for x
    x = 190,773,138.54/15,117.44
  6. Step 6: Final answer
    x = 12,619.41

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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.