Home / 10,721.86-14,788.05-9,393.25

Finding the Fourth Proportional to 10,721.86, 14,788.05 and 9,393.25

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Solution

The fourth proportional to 10,721.86, 14,788.05 and 9,393.25 is: 12,955.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.86 : 14,788.05 = 9,393.25 : x
  2. Step 2: Convert to fraction form
    10,721.86/14,788.05 = 9,393.25/x
  3. Step 3: Cross multiply
    10,721.86x = 14,788.05 × 9,393.25
  4. Step 4: Simplify right side
    10,721.86x = 138,907,850.66
  5. Step 5: Solve for x
    x = 138,907,850.66/10,721.86
  6. Step 6: Final answer
    x = 12,955.57

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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.