Home / 12,138.02-18,209.63-6,875.52

Finding the Fourth Proportional to 12,138.02, 18,209.63 and 6,875.52

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Solution

The fourth proportional to 12,138.02, 18,209.63 and 6,875.52 is: 10,314.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.02 : 18,209.63 = 6,875.52 : x
  2. Step 2: Convert to fraction form
    12,138.02/18,209.63 = 6,875.52/x
  3. Step 3: Cross multiply
    12,138.02x = 18,209.63 × 6,875.52
  4. Step 4: Simplify right side
    12,138.02x = 125,200,585.49
  5. Step 5: Solve for x
    x = 125,200,585.49/12,138.02
  6. Step 6: Final answer
    x = 10,314.75

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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.