Home / 21,065.11-31,587.05-7,020.20

Finding the Fourth Proportional to 21,065.11, 31,587.05 and 7,020.20

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Solution

The fourth proportional to 21,065.11, 31,587.05 and 7,020.20 is: 10,526.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.11 : 31,587.05 = 7,020.20 : x
  2. Step 2: Convert to fraction form
    21,065.11/31,587.05 = 7,020.20/x
  3. Step 3: Cross multiply
    21,065.11x = 31,587.05 × 7,020.20
  4. Step 4: Simplify right side
    21,065.11x = 221,747,504.93
  5. Step 5: Solve for x
    x = 221,747,504.93/21,065.11
  6. Step 6: Final answer
    x = 10,526.77

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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.