Home / 15,466.86-21,336.75-9,174.78

Finding the Fourth Proportional to 15,466.86, 21,336.75 and 9,174.78

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Solution

The fourth proportional to 15,466.86, 21,336.75 and 9,174.78 is: 12,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,466.86 : 21,336.75 = 9,174.78 : x
  2. Step 2: Convert to fraction form
    15,466.86/21,336.75 = 9,174.78/x
  3. Step 3: Cross multiply
    15,466.86x = 21,336.75 × 9,174.78
  4. Step 4: Simplify right side
    15,466.86x = 195,759,987.17
  5. Step 5: Solve for x
    x = 195,759,987.17/15,466.86
  6. Step 6: Final answer
    x = 12,656.74

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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.