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Finding the Fourth Proportional to 30,810.84, 42,518.84 and 16,663.70

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Solution

The fourth proportional to 30,810.84, 42,518.84 and 16,663.70 is: 22,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.84 : 42,518.84 = 16,663.70 : x
  2. Step 2: Convert to fraction form
    30,810.84/42,518.84 = 16,663.70/x
  3. Step 3: Cross multiply
    30,810.84x = 42,518.84 × 16,663.70
  4. Step 4: Simplify right side
    30,810.84x = 708,520,898.20
  5. Step 5: Solve for x
    x = 708,520,898.20/30,810.84
  6. Step 6: Final answer
    x = 22,995.83

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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.