Home / 28,055.64-38,716.70-15,480.40

Finding the Fourth Proportional to 28,055.64, 38,716.70 and 15,480.40

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Solution

The fourth proportional to 28,055.64, 38,716.70 and 15,480.40 is: 21,362.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.64 : 38,716.70 = 15,480.40 : x
  2. Step 2: Convert to fraction form
    28,055.64/38,716.70 = 15,480.40/x
  3. Step 3: Cross multiply
    28,055.64x = 38,716.70 × 15,480.40
  4. Step 4: Simplify right side
    28,055.64x = 599,350,002.68
  5. Step 5: Solve for x
    x = 599,350,002.68/28,055.64
  6. Step 6: Final answer
    x = 21,362.91

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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.