Home / 21,235.77-31,854.87-6,445.17

Finding the Fourth Proportional to 21,235.77, 31,854.87 and 6,445.17

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Solution

The fourth proportional to 21,235.77, 31,854.87 and 6,445.17 is: 9,668.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.77 : 31,854.87 = 6,445.17 : x
  2. Step 2: Convert to fraction form
    21,235.77/31,854.87 = 6,445.17/x
  3. Step 3: Cross multiply
    21,235.77x = 31,854.87 × 6,445.17
  4. Step 4: Simplify right side
    21,235.77x = 205,310,052.48
  5. Step 5: Solve for x
    x = 205,310,052.48/21,235.77
  6. Step 6: Final answer
    x = 9,668.12

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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.