Home / 31,450.60-47,165.86-10,386.72

Finding the Fourth Proportional to 31,450.60, 47,165.86 and 10,386.72

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Solution

The fourth proportional to 31,450.60, 47,165.86 and 10,386.72 is: 15,576.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,450.60 : 47,165.86 = 10,386.72 : x
  2. Step 2: Convert to fraction form
    31,450.60/47,165.86 = 10,386.72/x
  3. Step 3: Cross multiply
    31,450.60x = 47,165.86 × 10,386.72
  4. Step 4: Simplify right side
    31,450.60x = 489,898,581.38
  5. Step 5: Solve for x
    x = 489,898,581.38/31,450.60
  6. Step 6: Final answer
    x = 15,576.76

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1.5x scale

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.