Home / 31,589.80-47,384.70-28,364.20

Finding the Fourth Proportional to 31,589.80, 47,384.70 and 28,364.20

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Solution

The fourth proportional to 31,589.80, 47,384.70 and 28,364.20 is: 42,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,589.80 : 47,384.70 = 28,364.20 : x
  2. Step 2: Convert to fraction form
    31,589.80/47,384.70 = 28,364.20/x
  3. Step 3: Cross multiply
    31,589.80x = 47,384.70 × 28,364.20
  4. Step 4: Simplify right side
    31,589.80x = 1,344,029,107.74
  5. Step 5: Solve for x
    x = 1,344,029,107.74/31,589.80
  6. Step 6: Final answer
    x = 42,546.30

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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.