Home / 27,724.65-38,259.98-15,787.99

Finding the Fourth Proportional to 27,724.65, 38,259.98 and 15,787.99

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Solution

The fourth proportional to 27,724.65, 38,259.98 and 15,787.99 is: 21,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,724.65 : 38,259.98 = 15,787.99 : x
  2. Step 2: Convert to fraction form
    27,724.65/38,259.98 = 15,787.99/x
  3. Step 3: Cross multiply
    27,724.65x = 38,259.98 × 15,787.99
  4. Step 4: Simplify right side
    27,724.65x = 604,048,150.53
  5. Step 5: Solve for x
    x = 604,048,150.53/27,724.65
  6. Step 6: Final answer
    x = 21,787.40

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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.