Home / 12,356.80-18,535.32-9,885.48

Finding the Fourth Proportional to 12,356.80, 18,535.32 and 9,885.48

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Solution

The fourth proportional to 12,356.80, 18,535.32 and 9,885.48 is: 14,828.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.80 : 18,535.32 = 9,885.48 : x
  2. Step 2: Convert to fraction form
    12,356.80/18,535.32 = 9,885.48/x
  3. Step 3: Cross multiply
    12,356.80x = 18,535.32 × 9,885.48
  4. Step 4: Simplify right side
    12,356.80x = 183,230,535.15
  5. Step 5: Solve for x
    x = 183,230,535.15/12,356.80
  6. Step 6: Final answer
    x = 14,828.32

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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.