Home / 20,963.46-31,417.42-15,390.74

Finding the Fourth Proportional to 20,963.46, 31,417.42 and 15,390.74

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Solution

The fourth proportional to 20,963.46, 31,417.42 and 15,390.74 is: 23,065.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.46 : 31,417.42 = 15,390.74 : x
  2. Step 2: Convert to fraction form
    20,963.46/31,417.42 = 15,390.74/x
  3. Step 3: Cross multiply
    20,963.46x = 31,417.42 × 15,390.74
  4. Step 4: Simplify right side
    20,963.46x = 483,537,342.69
  5. Step 5: Solve for x
    x = 483,537,342.69/20,963.46
  6. Step 6: Final answer
    x = 23,065.72

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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.