Home / 12,085.16-18,127.10-3,319.40

Finding the Fourth Proportional to 12,085.16, 18,127.10 and 3,319.40

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Solution

The fourth proportional to 12,085.16, 18,127.10 and 3,319.40 is: 4,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.16 : 18,127.10 = 3,319.40 : x
  2. Step 2: Convert to fraction form
    12,085.16/18,127.10 = 3,319.40/x
  3. Step 3: Cross multiply
    12,085.16x = 18,127.10 × 3,319.40
  4. Step 4: Simplify right side
    12,085.16x = 60,171,095.74
  5. Step 5: Solve for x
    x = 60,171,095.74/12,085.16
  6. Step 6: Final answer
    x = 4,978.92

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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.