Home / 21,309.76-31,966.48-5,727.52

Finding the Fourth Proportional to 21,309.76, 31,966.48 and 5,727.52

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Solution

The fourth proportional to 21,309.76, 31,966.48 and 5,727.52 is: 8,591.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.76 : 31,966.48 = 5,727.52 : x
  2. Step 2: Convert to fraction form
    21,309.76/31,966.48 = 5,727.52/x
  3. Step 3: Cross multiply
    21,309.76x = 31,966.48 × 5,727.52
  4. Step 4: Simplify right side
    21,309.76x = 183,088,653.53
  5. Step 5: Solve for x
    x = 183,088,653.53/21,309.76
  6. Step 6: Final answer
    x = 8,591.77

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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.