Home / 30,753.36-42,447.96-28,894.80

Finding the Fourth Proportional to 30,753.36, 42,447.96 and 28,894.80

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Solution

The fourth proportional to 30,753.36, 42,447.96 and 28,894.80 is: 39,882.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,753.36 : 42,447.96 = 28,894.80 : x
  2. Step 2: Convert to fraction form
    30,753.36/42,447.96 = 28,894.80/x
  3. Step 3: Cross multiply
    30,753.36x = 42,447.96 × 28,894.80
  4. Step 4: Simplify right side
    30,753.36x = 1,226,525,314.61
  5. Step 5: Solve for x
    x = 1,226,525,314.61/30,753.36
  6. Step 6: Final answer
    x = 39,882.64

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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.