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Finding the Fourth Proportional to 30,955.02, 42,718.02 and 16,807.86

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Solution

The fourth proportional to 30,955.02, 42,718.02 and 16,807.86 is: 23,194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,955.02 : 42,718.02 = 16,807.86 : x
  2. Step 2: Convert to fraction form
    30,955.02/42,718.02 = 16,807.86/x
  3. Step 3: Cross multiply
    30,955.02x = 42,718.02 × 16,807.86
  4. Step 4: Simplify right side
    30,955.02x = 717,998,499.64
  5. Step 5: Solve for x
    x = 717,998,499.64/30,955.02
  6. Step 6: Final answer
    x = 23,194.90

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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.