Home / 28,186.54-38,895.91-15,439.06

Finding the Fourth Proportional to 28,186.54, 38,895.91 and 15,439.06

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Solution

The fourth proportional to 28,186.54, 38,895.91 and 15,439.06 is: 21,305.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.54 : 38,895.91 = 15,439.06 : x
  2. Step 2: Convert to fraction form
    28,186.54/38,895.91 = 15,439.06/x
  3. Step 3: Cross multiply
    28,186.54x = 38,895.91 × 15,439.06
  4. Step 4: Simplify right side
    28,186.54x = 600,516,356.16
  5. Step 5: Solve for x
    x = 600,516,356.16/28,186.54
  6. Step 6: Final answer
    x = 21,305.08

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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.