Home / 28,293.12-39,044.88-15,719.04

Finding the Fourth Proportional to 28,293.12, 39,044.88 and 15,719.04

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Solution

The fourth proportional to 28,293.12, 39,044.88 and 15,719.04 is: 21,692.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,293.12 : 39,044.88 = 15,719.04 : x
  2. Step 2: Convert to fraction form
    28,293.12/39,044.88 = 15,719.04/x
  3. Step 3: Cross multiply
    28,293.12x = 39,044.88 × 15,719.04
  4. Step 4: Simplify right side
    28,293.12x = 613,748,030.52
  5. Step 5: Solve for x
    x = 613,748,030.52/28,293.12
  6. Step 6: Final answer
    x = 21,692.48

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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.