Home / 12,152.79-18,223.92-5,135.94

Finding the Fourth Proportional to 12,152.79, 18,223.92 and 5,135.94

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Solution

The fourth proportional to 12,152.79, 18,223.92 and 5,135.94 is: 7,701.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,152.79 : 18,223.92 = 5,135.94 : x
  2. Step 2: Convert to fraction form
    12,152.79/18,223.92 = 5,135.94/x
  3. Step 3: Cross multiply
    12,152.79x = 18,223.92 × 5,135.94
  4. Step 4: Simplify right side
    12,152.79x = 93,596,959.68
  5. Step 5: Solve for x
    x = 93,596,959.68/12,152.79
  6. Step 6: Final answer
    x = 7,701.68

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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.