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Finding the Fourth Proportional to 15,114.61, 20,860.74 and 9,735.52

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Solution

The fourth proportional to 15,114.61, 20,860.74 and 9,735.52 is: 13,436.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.61 : 20,860.74 = 9,735.52 : x
  2. Step 2: Convert to fraction form
    15,114.61/20,860.74 = 9,735.52/x
  3. Step 3: Cross multiply
    15,114.61x = 20,860.74 × 9,735.52
  4. Step 4: Simplify right side
    15,114.61x = 203,090,151.48
  5. Step 5: Solve for x
    x = 203,090,151.48/15,114.61
  6. Step 6: Final answer
    x = 13,436.68

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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.