Home / 31,389.28-47,090.40-9,203.38

Finding the Fourth Proportional to 31,389.28, 47,090.40 and 9,203.38

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Solution

The fourth proportional to 31,389.28, 47,090.40 and 9,203.38 is: 13,806.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,389.28 : 47,090.40 = 9,203.38 : x
  2. Step 2: Convert to fraction form
    31,389.28/47,090.40 = 9,203.38/x
  3. Step 3: Cross multiply
    31,389.28x = 47,090.40 × 9,203.38
  4. Step 4: Simplify right side
    31,389.28x = 433,390,845.55
  5. Step 5: Solve for x
    x = 433,390,845.55/31,389.28
  6. Step 6: Final answer
    x = 13,806.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.