Home / 12,411.02-18,616.49-5,390.12

Finding the Fourth Proportional to 12,411.02, 18,616.49 and 5,390.12

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Solution

The fourth proportional to 12,411.02, 18,616.49 and 5,390.12 is: 8,085.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.02 : 18,616.49 = 5,390.12 : x
  2. Step 2: Convert to fraction form
    12,411.02/18,616.49 = 5,390.12/x
  3. Step 3: Cross multiply
    12,411.02x = 18,616.49 × 5,390.12
  4. Step 4: Simplify right side
    12,411.02x = 100,345,088.13
  5. Step 5: Solve for x
    x = 100,345,088.13/12,411.02
  6. Step 6: Final answer
    x = 8,085.16

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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.