Home / 28,531.08-39,374.16-15,955.80

Finding the Fourth Proportional to 28,531.08, 39,374.16 and 15,955.80

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Solution

The fourth proportional to 28,531.08, 39,374.16 and 15,955.80 is: 22,019.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.08 : 39,374.16 = 15,955.80 : x
  2. Step 2: Convert to fraction form
    28,531.08/39,374.16 = 15,955.80/x
  3. Step 3: Cross multiply
    28,531.08x = 39,374.16 × 15,955.80
  4. Step 4: Simplify right side
    28,531.08x = 628,246,222.13
  5. Step 5: Solve for x
    x = 628,246,222.13/28,531.08
  6. Step 6: Final answer
    x = 22,019.71

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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.