Home / 28,429.65-39,232.43-15,684.05

Finding the Fourth Proportional to 28,429.65, 39,232.43 and 15,684.05

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Solution

The fourth proportional to 28,429.65, 39,232.43 and 15,684.05 is: 21,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.65 : 39,232.43 = 15,684.05 : x
  2. Step 2: Convert to fraction form
    28,429.65/39,232.43 = 15,684.05/x
  3. Step 3: Cross multiply
    28,429.65x = 39,232.43 × 15,684.05
  4. Step 4: Simplify right side
    28,429.65x = 615,323,531.03
  5. Step 5: Solve for x
    x = 615,323,531.03/28,429.65
  6. Step 6: Final answer
    x = 21,643.73

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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.