Home / 31,809.79-47,707.39-14,284.63

Finding the Fourth Proportional to 31,809.79, 47,707.39 and 14,284.63

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Solution

The fourth proportional to 31,809.79, 47,707.39 and 14,284.63 is: 21,423.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.79 : 47,707.39 = 14,284.63 : x
  2. Step 2: Convert to fraction form
    31,809.79/47,707.39 = 14,284.63/x
  3. Step 3: Cross multiply
    31,809.79x = 47,707.39 × 14,284.63
  4. Step 4: Simplify right side
    31,809.79x = 681,482,104.46
  5. Step 5: Solve for x
    x = 681,482,104.46/31,809.79
  6. Step 6: Final answer
    x = 21,423.66

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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.