Home / 27,888.22-38,485.79-15,141.40

Finding the Fourth Proportional to 27,888.22, 38,485.79 and 15,141.40

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Solution

The fourth proportional to 27,888.22, 38,485.79 and 15,141.40 is: 20,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.22 : 38,485.79 = 15,141.40 : x
  2. Step 2: Convert to fraction form
    27,888.22/38,485.79 = 15,141.40/x
  3. Step 3: Cross multiply
    27,888.22x = 38,485.79 × 15,141.40
  4. Step 4: Simplify right side
    27,888.22x = 582,728,740.71
  5. Step 5: Solve for x
    x = 582,728,740.71/27,888.22
  6. Step 6: Final answer
    x = 20,895.16

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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.