Home / 11,137.04-15,370.80-6,420.32

Finding the Fourth Proportional to 11,137.04, 15,370.80 and 6,420.32

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Solution

The fourth proportional to 11,137.04, 15,370.80 and 6,420.32 is: 8,861.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.04 : 15,370.80 = 6,420.32 : x
  2. Step 2: Convert to fraction form
    11,137.04/15,370.80 = 6,420.32/x
  3. Step 3: Cross multiply
    11,137.04x = 15,370.80 × 6,420.32
  4. Step 4: Simplify right side
    11,137.04x = 98,685,454.66
  5. Step 5: Solve for x
    x = 98,685,454.66/11,137.04
  6. Step 6: Final answer
    x = 8,861.01

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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.