Home / 20,968.04-28,935.61-11,407.82

Finding the Fourth Proportional to 20,968.04, 28,935.61 and 11,407.82

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Solution

The fourth proportional to 20,968.04, 28,935.61 and 11,407.82 is: 15,742.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.04 : 28,935.61 = 11,407.82 : x
  2. Step 2: Convert to fraction form
    20,968.04/28,935.61 = 11,407.82/x
  3. Step 3: Cross multiply
    20,968.04x = 28,935.61 × 11,407.82
  4. Step 4: Simplify right side
    20,968.04x = 330,092,129.61
  5. Step 5: Solve for x
    x = 330,092,129.61/20,968.04
  6. Step 6: Final answer
    x = 15,742.63

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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.