Home / 12,345.12-18,506.75-9,436.41

Finding the Fourth Proportional to 12,345.12, 18,506.75 and 9,436.41

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Solution

The fourth proportional to 12,345.12, 18,506.75 and 9,436.41 is: 14,146.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.12 : 18,506.75 = 9,436.41 : x
  2. Step 2: Convert to fraction form
    12,345.12/18,506.75 = 9,436.41/x
  3. Step 3: Cross multiply
    12,345.12x = 18,506.75 × 9,436.41
  4. Step 4: Simplify right side
    12,345.12x = 174,637,233.59
  5. Step 5: Solve for x
    x = 174,637,233.59/12,345.12
  6. Step 6: Final answer
    x = 14,146.26

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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.