Home / 31,689.95-47,541.27-11,699.56

Finding the Fourth Proportional to 31,689.95, 47,541.27 and 11,699.56

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Solution

The fourth proportional to 31,689.95, 47,541.27 and 11,699.56 is: 17,551.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.95 : 47,541.27 = 11,699.56 : x
  2. Step 2: Convert to fraction form
    31,689.95/47,541.27 = 11,699.56/x
  3. Step 3: Cross multiply
    31,689.95x = 47,541.27 × 11,699.56
  4. Step 4: Simplify right side
    31,689.95x = 556,212,099.92
  5. Step 5: Solve for x
    x = 556,212,099.92/31,689.95
  6. Step 6: Final answer
    x = 17,551.69

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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.