Home / 31,941.40-47,894.80-14,390.68

Finding the Fourth Proportional to 31,941.40, 47,894.80 and 14,390.68

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Solution

The fourth proportional to 31,941.40, 47,894.80 and 14,390.68 is: 21,578.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,941.40 : 47,894.80 = 14,390.68 : x
  2. Step 2: Convert to fraction form
    31,941.40/47,894.80 = 14,390.68/x
  3. Step 3: Cross multiply
    31,941.40x = 47,894.80 × 14,390.68
  4. Step 4: Simplify right side
    31,941.40x = 689,238,740.46
  5. Step 5: Solve for x
    x = 689,238,740.46/31,941.40
  6. Step 6: Final answer
    x = 21,578.23

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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.