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Finding the Fourth Proportional to 15,079.48, 20,810.46 and 9,784.60

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Solution

The fourth proportional to 15,079.48, 20,810.46 and 9,784.60 is: 13,503.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,079.48 : 20,810.46 = 9,784.60 : x
  2. Step 2: Convert to fraction form
    15,079.48/20,810.46 = 9,784.60/x
  3. Step 3: Cross multiply
    15,079.48x = 20,810.46 × 9,784.60
  4. Step 4: Simplify right side
    15,079.48x = 203,622,026.92
  5. Step 5: Solve for x
    x = 203,622,026.92/15,079.48
  6. Step 6: Final answer
    x = 13,503.25

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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.