Home / 21,180.04-31,743.78-7,312.84

Finding the Fourth Proportional to 21,180.04, 31,743.78 and 7,312.84

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Solution

The fourth proportional to 21,180.04, 31,743.78 and 7,312.84 is: 10,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.04 : 31,743.78 = 7,312.84 : x
  2. Step 2: Convert to fraction form
    21,180.04/31,743.78 = 7,312.84/x
  3. Step 3: Cross multiply
    21,180.04x = 31,743.78 × 7,312.84
  4. Step 4: Simplify right side
    21,180.04x = 232,137,184.14
  5. Step 5: Solve for x
    x = 232,137,184.14/21,180.04
  6. Step 6: Final answer
    x = 10,960.19

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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.