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Finding the Fourth Proportional to 16,693.76, 23,036.64 and 9,621.20

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Solution

The fourth proportional to 16,693.76, 23,036.64 and 9,621.20 is: 13,276.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,693.76 : 23,036.64 = 9,621.20 : x
  2. Step 2: Convert to fraction form
    16,693.76/23,036.64 = 9,621.20/x
  3. Step 3: Cross multiply
    16,693.76x = 23,036.64 × 9,621.20
  4. Step 4: Simplify right side
    16,693.76x = 221,640,120.77
  5. Step 5: Solve for x
    x = 221,640,120.77/16,693.76
  6. Step 6: Final answer
    x = 13,276.82

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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.