Home / 10,137.31-13,989.65-5,660.89

Finding the Fourth Proportional to 10,137.31, 13,989.65 and 5,660.89

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Solution

The fourth proportional to 10,137.31, 13,989.65 and 5,660.89 is: 7,812.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,137.31 : 13,989.65 = 5,660.89 : x
  2. Step 2: Convert to fraction form
    10,137.31/13,989.65 = 5,660.89/x
  3. Step 3: Cross multiply
    10,137.31x = 13,989.65 × 5,660.89
  4. Step 4: Simplify right side
    10,137.31x = 79,193,806.51
  5. Step 5: Solve for x
    x = 79,193,806.51/10,137.31
  6. Step 6: Final answer
    x = 7,812.11

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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.