Home / 28,326.75-39,091.87-15,580.47

Finding the Fourth Proportional to 28,326.75, 39,091.87 and 15,580.47

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Solution

The fourth proportional to 28,326.75, 39,091.87 and 15,580.47 is: 21,501.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.75 : 39,091.87 = 15,580.47 : x
  2. Step 2: Convert to fraction form
    28,326.75/39,091.87 = 15,580.47/x
  3. Step 3: Cross multiply
    28,326.75x = 39,091.87 × 15,580.47
  4. Step 4: Simplify right side
    28,326.75x = 609,069,707.78
  5. Step 5: Solve for x
    x = 609,069,707.78/28,326.75
  6. Step 6: Final answer
    x = 21,501.57

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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.