Home / 28,317.84-39,077.52-15,743.40

Finding the Fourth Proportional to 28,317.84, 39,077.52 and 15,743.40

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Solution

The fourth proportional to 28,317.84, 39,077.52 and 15,743.40 is: 21,725.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.84 : 39,077.52 = 15,743.40 : x
  2. Step 2: Convert to fraction form
    28,317.84/39,077.52 = 15,743.40/x
  3. Step 3: Cross multiply
    28,317.84x = 39,077.52 × 15,743.40
  4. Step 4: Simplify right side
    28,317.84x = 615,213,028.37
  5. Step 5: Solve for x
    x = 615,213,028.37/28,317.84
  6. Step 6: Final answer
    x = 21,725.28

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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.