Home / 27,117.45-37,420.99-15,787.27

Finding the Fourth Proportional to 27,117.45, 37,420.99 and 15,787.27

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Solution

The fourth proportional to 27,117.45, 37,420.99 and 15,787.27 is: 21,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,117.45 : 37,420.99 = 15,787.27 : x
  2. Step 2: Convert to fraction form
    27,117.45/37,420.99 = 15,787.27/x
  3. Step 3: Cross multiply
    27,117.45x = 37,420.99 × 15,787.27
  4. Step 4: Simplify right side
    27,117.45x = 590,775,280.11
  5. Step 5: Solve for x
    x = 590,775,280.11/27,117.45
  6. Step 6: Final answer
    x = 21,785.80

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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.