Home / 21,288.58-31,931.66-6,496.32

Finding the Fourth Proportional to 21,288.58, 31,931.66 and 6,496.32

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Solution

The fourth proportional to 21,288.58, 31,931.66 and 6,496.32 is: 9,744.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.58 : 31,931.66 = 6,496.32 : x
  2. Step 2: Convert to fraction form
    21,288.58/31,931.66 = 6,496.32/x
  3. Step 3: Cross multiply
    21,288.58x = 31,931.66 × 6,496.32
  4. Step 4: Simplify right side
    21,288.58x = 207,438,281.49
  5. Step 5: Solve for x
    x = 207,438,281.49/21,288.58
  6. Step 6: Final answer
    x = 9,744.11

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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.