Home / 21,045.36-31,557.20-7,000.32

Finding the Fourth Proportional to 21,045.36, 31,557.20 and 7,000.32

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Solution

The fourth proportional to 21,045.36, 31,557.20 and 7,000.32 is: 10,496.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.36 : 31,557.20 = 7,000.32 : x
  2. Step 2: Convert to fraction form
    21,045.36/31,557.20 = 7,000.32/x
  3. Step 3: Cross multiply
    21,045.36x = 31,557.20 × 7,000.32
  4. Step 4: Simplify right side
    21,045.36x = 220,910,498.30
  5. Step 5: Solve for x
    x = 220,910,498.30/21,045.36
  6. Step 6: Final answer
    x = 10,496.87

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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.