Home / 21,033.80-31,549.44-7,885.07

Finding the Fourth Proportional to 21,033.80, 31,549.44 and 7,885.07

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Solution

The fourth proportional to 21,033.80, 31,549.44 and 7,885.07 is: 11,827.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.80 : 31,549.44 = 7,885.07 : x
  2. Step 2: Convert to fraction form
    21,033.80/31,549.44 = 7,885.07/x
  3. Step 3: Cross multiply
    21,033.80x = 31,549.44 × 7,885.07
  4. Step 4: Simplify right side
    21,033.80x = 248,769,385.11
  5. Step 5: Solve for x
    x = 248,769,385.11/21,033.80
  6. Step 6: Final answer
    x = 11,827.13

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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.