Home / 21,250.32-31,876.80-6,460.32

Finding the Fourth Proportional to 21,250.32, 31,876.80 and 6,460.32

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Solution

The fourth proportional to 21,250.32, 31,876.80 and 6,460.32 is: 9,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.32 : 31,876.80 = 6,460.32 : x
  2. Step 2: Convert to fraction form
    21,250.32/31,876.80 = 6,460.32/x
  3. Step 3: Cross multiply
    21,250.32x = 31,876.80 × 6,460.32
  4. Step 4: Simplify right side
    21,250.32x = 205,934,328.58
  5. Step 5: Solve for x
    x = 205,934,328.58/21,250.32
  6. Step 6: Final answer
    x = 9,690.88

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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.