Home / 28,055.93-38,717.15-15,480.68

Finding the Fourth Proportional to 28,055.93, 38,717.15 and 15,480.68

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Solution

The fourth proportional to 28,055.93, 38,717.15 and 15,480.68 is: 21,363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.93 : 38,717.15 = 15,480.68 : x
  2. Step 2: Convert to fraction form
    28,055.93/38,717.15 = 15,480.68/x
  3. Step 3: Cross multiply
    28,055.93x = 38,717.15 × 15,480.68
  4. Step 4: Simplify right side
    28,055.93x = 599,367,538.67
  5. Step 5: Solve for x
    x = 599,367,538.67/28,055.93
  6. Step 6: Final answer
    x = 21,363.31

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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.