Home / 14,549.40-21,809.70-7,147.80

Finding the Fourth Proportional to 14,549.40, 21,809.70 and 7,147.80

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Solution

The fourth proportional to 14,549.40, 21,809.70 and 7,147.80 is: 10,714.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,549.40 : 21,809.70 = 7,147.80 : x
  2. Step 2: Convert to fraction form
    14,549.40/21,809.70 = 7,147.80/x
  3. Step 3: Cross multiply
    14,549.40x = 21,809.70 × 7,147.80
  4. Step 4: Simplify right side
    14,549.40x = 155,891,373.66
  5. Step 5: Solve for x
    x = 155,891,373.66/14,549.40
  6. Step 6: Final answer
    x = 10,714.63

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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.