Home / 20,335.48-28,054.47-13,261.66

Finding the Fourth Proportional to 20,335.48, 28,054.47 and 13,261.66

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Solution

The fourth proportional to 20,335.48, 28,054.47 and 13,261.66 is: 18,295.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.48 : 28,054.47 = 13,261.66 : x
  2. Step 2: Convert to fraction form
    20,335.48/28,054.47 = 13,261.66/x
  3. Step 3: Cross multiply
    20,335.48x = 28,054.47 × 13,261.66
  4. Step 4: Simplify right side
    20,335.48x = 372,048,842.62
  5. Step 5: Solve for x
    x = 372,048,842.62/20,335.48
  6. Step 6: Final answer
    x = 18,295.55

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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.