Home / 11,355.16-15,669.71-6,319.59

Finding the Fourth Proportional to 11,355.16, 15,669.71 and 6,319.59

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Solution

The fourth proportional to 11,355.16, 15,669.71 and 6,319.59 is: 8,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.16 : 15,669.71 = 6,319.59 : x
  2. Step 2: Convert to fraction form
    11,355.16/15,669.71 = 6,319.59/x
  3. Step 3: Cross multiply
    11,355.16x = 15,669.71 × 6,319.59
  4. Step 4: Simplify right side
    11,355.16x = 99,026,079.75
  5. Step 5: Solve for x
    x = 99,026,079.75/11,355.16
  6. Step 6: Final answer
    x = 8,720.80

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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.