Home / 15,127.44-20,870.04-11,157.96

Finding the Fourth Proportional to 15,127.44, 20,870.04 and 11,157.96

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Solution

The fourth proportional to 15,127.44, 20,870.04 and 11,157.96 is: 15,393.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.44 : 20,870.04 = 11,157.96 : x
  2. Step 2: Convert to fraction form
    15,127.44/20,870.04 = 11,157.96/x
  3. Step 3: Cross multiply
    15,127.44x = 20,870.04 × 11,157.96
  4. Step 4: Simplify right side
    15,127.44x = 232,867,071.52
  5. Step 5: Solve for x
    x = 232,867,071.52/15,127.44
  6. Step 6: Final answer
    x = 15,393.69

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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.