Home / 30,696.16-42,319.92-20,067.52

Finding the Fourth Proportional to 30,696.16, 42,319.92 and 20,067.52

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Solution

The fourth proportional to 30,696.16, 42,319.92 and 20,067.52 is: 27,666.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,696.16 : 42,319.92 = 20,067.52 : x
  2. Step 2: Convert to fraction form
    30,696.16/42,319.92 = 20,067.52/x
  3. Step 3: Cross multiply
    30,696.16x = 42,319.92 × 20,067.52
  4. Step 4: Simplify right side
    30,696.16x = 849,255,841.00
  5. Step 5: Solve for x
    x = 849,255,841.00/30,696.16
  6. Step 6: Final answer
    x = 27,666.52

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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.