Home / 10,990.34-15,165.69-6,513.33

Finding the Fourth Proportional to 10,990.34, 15,165.69 and 6,513.33

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Solution

The fourth proportional to 10,990.34, 15,165.69 and 6,513.33 is: 8,987.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.34 : 15,165.69 = 6,513.33 : x
  2. Step 2: Convert to fraction form
    10,990.34/15,165.69 = 6,513.33/x
  3. Step 3: Cross multiply
    10,990.34x = 15,165.69 × 6,513.33
  4. Step 4: Simplify right side
    10,990.34x = 98,779,143.65
  5. Step 5: Solve for x
    x = 98,779,143.65/10,990.34
  6. Step 6: Final answer
    x = 8,987.82

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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.