Home / 11,355.16-15,670.42-6,319.72

Finding the Fourth Proportional to 11,355.16, 15,670.42 and 6,319.72

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Solution

The fourth proportional to 11,355.16, 15,670.42 and 6,319.72 is: 8,721.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.16 : 15,670.42 = 6,319.72 : x
  2. Step 2: Convert to fraction form
    11,355.16/15,670.42 = 6,319.72/x
  3. Step 3: Cross multiply
    11,355.16x = 15,670.42 × 6,319.72
  4. Step 4: Simplify right side
    11,355.16x = 99,032,666.68
  5. Step 5: Solve for x
    x = 99,032,666.68/11,355.16
  6. Step 6: Final answer
    x = 8,721.38

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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.