Home / 14,959.36-20,645.40-8,991.28

Finding the Fourth Proportional to 14,959.36, 20,645.40 and 8,991.28

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Solution

The fourth proportional to 14,959.36, 20,645.40 and 8,991.28 is: 12,408.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,959.36 : 20,645.40 = 8,991.28 : x
  2. Step 2: Convert to fraction form
    14,959.36/20,645.40 = 8,991.28/x
  3. Step 3: Cross multiply
    14,959.36x = 20,645.40 × 8,991.28
  4. Step 4: Simplify right side
    14,959.36x = 185,628,572.11
  5. Step 5: Solve for x
    x = 185,628,572.11/14,959.36
  6. Step 6: Final answer
    x = 12,408.86

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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.