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Finding the Fourth Proportional to 30,803.63, 42,508.95 and 16,656.44

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Solution

The fourth proportional to 30,803.63, 42,508.95 and 16,656.44 is: 22,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,803.63 : 42,508.95 = 16,656.44 : x
  2. Step 2: Convert to fraction form
    30,803.63/42,508.95 = 16,656.44/x
  3. Step 3: Cross multiply
    30,803.63x = 42,508.95 × 16,656.44
  4. Step 4: Simplify right side
    30,803.63x = 708,047,775.14
  5. Step 5: Solve for x
    x = 708,047,775.14/30,803.63
  6. Step 6: Final answer
    x = 22,985.86

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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.