Home / 28,055.08-38,715.78-15,479.92

Finding the Fourth Proportional to 28,055.08, 38,715.78 and 15,479.92

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Solution

The fourth proportional to 28,055.08, 38,715.78 and 15,479.92 is: 21,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.08 : 38,715.78 = 15,479.92 : x
  2. Step 2: Convert to fraction form
    28,055.08/38,715.78 = 15,479.92/x
  3. Step 3: Cross multiply
    28,055.08x = 38,715.78 × 15,479.92
  4. Step 4: Simplify right side
    28,055.08x = 599,317,177.14
  5. Step 5: Solve for x
    x = 599,317,177.14/28,055.08
  6. Step 6: Final answer
    x = 21,362.16

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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.