Home / 10,918.08-15,062.16-7,380

Finding the Fourth Proportional to 10,918.08, 15,062.16 and 7,380

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Solution

The fourth proportional to 10,918.08, 15,062.16 and 7,380 is: 10,181.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.08 : 15,062.16 = 7,380 : x
  2. Step 2: Convert to fraction form
    10,918.08/15,062.16 = 7,380/x
  3. Step 3: Cross multiply
    10,918.08x = 15,062.16 × 7,380
  4. Step 4: Simplify right side
    10,918.08x = 111,158,740.80
  5. Step 5: Solve for x
    x = 111,158,740.80/10,918.08
  6. Step 6: Final answer
    x = 10,181.16

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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.