Home / 10,999.23-15,178.52-6,520.30

Finding the Fourth Proportional to 10,999.23, 15,178.52 and 6,520.30

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Solution

The fourth proportional to 10,999.23, 15,178.52 and 6,520.30 is: 8,997.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.23 : 15,178.52 = 6,520.30 : x
  2. Step 2: Convert to fraction form
    10,999.23/15,178.52 = 6,520.30/x
  3. Step 3: Cross multiply
    10,999.23x = 15,178.52 × 6,520.30
  4. Step 4: Simplify right side
    10,999.23x = 98,968,482.31
  5. Step 5: Solve for x
    x = 98,968,482.31/10,999.23
  6. Step 6: Final answer
    x = 8,997.77

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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.