Home / 15,797.72-21,787.66-11,828.28

Finding the Fourth Proportional to 15,797.72, 21,787.66 and 11,828.28

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Solution

The fourth proportional to 15,797.72, 21,787.66 and 11,828.28 is: 16,313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.72 : 21,787.66 = 11,828.28 : x
  2. Step 2: Convert to fraction form
    15,797.72/21,787.66 = 11,828.28/x
  3. Step 3: Cross multiply
    15,797.72x = 21,787.66 × 11,828.28
  4. Step 4: Simplify right side
    15,797.72x = 257,710,543.02
  5. Step 5: Solve for x
    x = 257,710,543.02/15,797.72
  6. Step 6: Final answer
    x = 16,313.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.