Home / 28,619.75-42,936.17-9,899.77

Finding the Fourth Proportional to 28,619.75, 42,936.17 and 9,899.77

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Solution

The fourth proportional to 28,619.75, 42,936.17 and 9,899.77 is: 14,851.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.75 : 42,936.17 = 9,899.77 : x
  2. Step 2: Convert to fraction form
    28,619.75/42,936.17 = 9,899.77/x
  3. Step 3: Cross multiply
    28,619.75x = 42,936.17 × 9,899.77
  4. Step 4: Simplify right side
    28,619.75x = 425,058,207.68
  5. Step 5: Solve for x
    x = 425,058,207.68/28,619.75
  6. Step 6: Final answer
    x = 14,851.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.