Home / 27,816.24-38,386.23-15,720.66

Finding the Fourth Proportional to 27,816.24, 38,386.23 and 15,720.66

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Solution

The fourth proportional to 27,816.24, 38,386.23 and 15,720.66 is: 21,694.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,816.24 : 38,386.23 = 15,720.66 : x
  2. Step 2: Convert to fraction form
    27,816.24/38,386.23 = 15,720.66/x
  3. Step 3: Cross multiply
    27,816.24x = 38,386.23 × 15,720.66
  4. Step 4: Simplify right side
    27,816.24x = 603,456,870.51
  5. Step 5: Solve for x
    x = 603,456,870.51/27,816.24
  6. Step 6: Final answer
    x = 21,694.41

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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.