Home / 31,821.40-47,717.70-14,282.20

Finding the Fourth Proportional to 31,821.40, 47,717.70 and 14,282.20

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Solution

The fourth proportional to 31,821.40, 47,717.70 and 14,282.20 is: 21,416.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821.40 : 47,717.70 = 14,282.20 : x
  2. Step 2: Convert to fraction form
    31,821.40/47,717.70 = 14,282.20/x
  3. Step 3: Cross multiply
    31,821.40x = 47,717.70 × 14,282.20
  4. Step 4: Simplify right side
    31,821.40x = 681,513,734.94
  5. Step 5: Solve for x
    x = 681,513,734.94/31,821.40
  6. Step 6: Final answer
    x = 21,416.84

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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.