Home / 31,981.65-47,970.72-9,795.21

Finding the Fourth Proportional to 31,981.65, 47,970.72 and 9,795.21

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Solution

The fourth proportional to 31,981.65, 47,970.72 and 9,795.21 is: 14,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.65 : 47,970.72 = 9,795.21 : x
  2. Step 2: Convert to fraction form
    31,981.65/47,970.72 = 9,795.21/x
  3. Step 3: Cross multiply
    31,981.65x = 47,970.72 × 9,795.21
  4. Step 4: Simplify right side
    31,981.65x = 469,883,276.25
  5. Step 5: Solve for x
    x = 469,883,276.25/31,981.65
  6. Step 6: Final answer
    x = 14,692.28

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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.