Home / 22,509.72-31,045.68-21,000.66

Finding the Fourth Proportional to 22,509.72, 31,045.68 and 21,000.66

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Solution

The fourth proportional to 22,509.72, 31,045.68 and 21,000.66 is: 28,964.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,509.72 : 31,045.68 = 21,000.66 : x
  2. Step 2: Convert to fraction form
    22,509.72/31,045.68 = 21,000.66/x
  3. Step 3: Cross multiply
    22,509.72x = 31,045.68 × 21,000.66
  4. Step 4: Simplify right side
    22,509.72x = 651,979,770.15
  5. Step 5: Solve for x
    x = 651,979,770.15/22,509.72
  6. Step 6: Final answer
    x = 28,964.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.