Home / 28,316.12-39,074.82-15,740.60

Finding the Fourth Proportional to 28,316.12, 39,074.82 and 15,740.60

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Solution

The fourth proportional to 28,316.12, 39,074.82 and 15,740.60 is: 21,721.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.12 : 39,074.82 = 15,740.60 : x
  2. Step 2: Convert to fraction form
    28,316.12/39,074.82 = 15,740.60/x
  3. Step 3: Cross multiply
    28,316.12x = 39,074.82 × 15,740.60
  4. Step 4: Simplify right side
    28,316.12x = 615,061,111.69
  5. Step 5: Solve for x
    x = 615,061,111.69/28,316.12
  6. Step 6: Final answer
    x = 21,721.24

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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.