Home / 21,041.32-31,558.24-6,999.96

Finding the Fourth Proportional to 21,041.32, 31,558.24 and 6,999.96

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Solution

The fourth proportional to 21,041.32, 31,558.24 and 6,999.96 is: 10,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.32 : 31,558.24 = 6,999.96 : x
  2. Step 2: Convert to fraction form
    21,041.32/31,558.24 = 6,999.96/x
  3. Step 3: Cross multiply
    21,041.32x = 31,558.24 × 6,999.96
  4. Step 4: Simplify right side
    21,041.32x = 220,906,417.67
  5. Step 5: Solve for x
    x = 220,906,417.67/21,041.32
  6. Step 6: Final answer
    x = 10,498.70

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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.