Home / 13,482.08-18,605.35-7,820.19

Finding the Fourth Proportional to 13,482.08, 18,605.35 and 7,820.19

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Solution

The fourth proportional to 13,482.08, 18,605.35 and 7,820.19 is: 10,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,482.08 : 18,605.35 = 7,820.19 : x
  2. Step 2: Convert to fraction form
    13,482.08/18,605.35 = 7,820.19/x
  3. Step 3: Cross multiply
    13,482.08x = 18,605.35 × 7,820.19
  4. Step 4: Simplify right side
    13,482.08x = 145,497,372.02
  5. Step 5: Solve for x
    x = 145,497,372.02/13,482.08
  6. Step 6: Final answer
    x = 10,791.91

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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.