Home / 13,083.32-18,054.80-7,115.04

Finding the Fourth Proportional to 13,083.32, 18,054.80 and 7,115.04

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Solution

The fourth proportional to 13,083.32, 18,054.80 and 7,115.04 is: 9,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,083.32 : 18,054.80 = 7,115.04 : x
  2. Step 2: Convert to fraction form
    13,083.32/18,054.80 = 7,115.04/x
  3. Step 3: Cross multiply
    13,083.32x = 18,054.80 × 7,115.04
  4. Step 4: Simplify right side
    13,083.32x = 128,460,615.30
  5. Step 5: Solve for x
    x = 128,460,615.30/13,083.32
  6. Step 6: Final answer
    x = 9,818.65

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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.