Home / 10,967.36-15,130.32-6,720.08

Finding the Fourth Proportional to 10,967.36, 15,130.32 and 6,720.08

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Solution

The fourth proportional to 10,967.36, 15,130.32 and 6,720.08 is: 9,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,967.36 : 15,130.32 = 6,720.08 : x
  2. Step 2: Convert to fraction form
    10,967.36/15,130.32 = 6,720.08/x
  3. Step 3: Cross multiply
    10,967.36x = 15,130.32 × 6,720.08
  4. Step 4: Simplify right side
    10,967.36x = 101,676,960.83
  5. Step 5: Solve for x
    x = 101,676,960.83/10,967.36
  6. Step 6: Final answer
    x = 9,270.87

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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.