Home / 12,137.18-16,752.78-7,888.32

Finding the Fourth Proportional to 12,137.18, 16,752.78 and 7,888.32

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Solution

The fourth proportional to 12,137.18, 16,752.78 and 7,888.32 is: 10,888.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.18 : 16,752.78 = 7,888.32 : x
  2. Step 2: Convert to fraction form
    12,137.18/16,752.78 = 7,888.32/x
  3. Step 3: Cross multiply
    12,137.18x = 16,752.78 × 7,888.32
  4. Step 4: Simplify right side
    12,137.18x = 132,151,289.53
  5. Step 5: Solve for x
    x = 132,151,289.53/12,137.18
  6. Step 6: Final answer
    x = 10,888.14

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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.