Home / 21,229.02-31,848.30-7,188.24

Finding the Fourth Proportional to 21,229.02, 31,848.30 and 7,188.24

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Solution

The fourth proportional to 21,229.02, 31,848.30 and 7,188.24 is: 10,783.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.02 : 31,848.30 = 7,188.24 : x
  2. Step 2: Convert to fraction form
    21,229.02/31,848.30 = 7,188.24/x
  3. Step 3: Cross multiply
    21,229.02x = 31,848.30 × 7,188.24
  4. Step 4: Simplify right side
    21,229.02x = 228,933,223.99
  5. Step 5: Solve for x
    x = 228,933,223.99/21,229.02
  6. Step 6: Final answer
    x = 10,783.98

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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.