Home / 13,612.95-18,785.16-9,136.08

Finding the Fourth Proportional to 13,612.95, 18,785.16 and 9,136.08

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Solution

The fourth proportional to 13,612.95, 18,785.16 and 9,136.08 is: 12,607.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.95 : 18,785.16 = 9,136.08 : x
  2. Step 2: Convert to fraction form
    13,612.95/18,785.16 = 9,136.08/x
  3. Step 3: Cross multiply
    13,612.95x = 18,785.16 × 9,136.08
  4. Step 4: Simplify right side
    13,612.95x = 171,622,724.57
  5. Step 5: Solve for x
    x = 171,622,724.57/13,612.95
  6. Step 6: Final answer
    x = 12,607.31

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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.