Home / 31,458.13-47,203.61-12,751.99

Finding the Fourth Proportional to 31,458.13, 47,203.61 and 12,751.99

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Solution

The fourth proportional to 31,458.13, 47,203.61 and 12,751.99 is: 19,134.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,458.13 : 47,203.61 = 12,751.99 : x
  2. Step 2: Convert to fraction form
    31,458.13/47,203.61 = 12,751.99/x
  3. Step 3: Cross multiply
    31,458.13x = 47,203.61 × 12,751.99
  4. Step 4: Simplify right side
    31,458.13x = 601,939,780.91
  5. Step 5: Solve for x
    x = 601,939,780.91/31,458.13
  6. Step 6: Final answer
    x = 19,134.63

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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.