Home / 31,618.20-47,429.70-9,429.84

Finding the Fourth Proportional to 31,618.20, 47,429.70 and 9,429.84

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Solution

The fourth proportional to 31,618.20, 47,429.70 and 9,429.84 is: 14,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.20 : 47,429.70 = 9,429.84 : x
  2. Step 2: Convert to fraction form
    31,618.20/47,429.70 = 9,429.84/x
  3. Step 3: Cross multiply
    31,618.20x = 47,429.70 × 9,429.84
  4. Step 4: Simplify right side
    31,618.20x = 447,254,482.25
  5. Step 5: Solve for x
    x = 447,254,482.25/31,618.20
  6. Step 6: Final answer
    x = 14,145.48

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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.