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Finding the Fourth Proportional to 30,655.40, 45,972.30 and 10,934.60

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Solution

The fourth proportional to 30,655.40, 45,972.30 and 10,934.60 is: 16,398.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.40 : 45,972.30 = 10,934.60 : x
  2. Step 2: Convert to fraction form
    30,655.40/45,972.30 = 10,934.60/x
  3. Step 3: Cross multiply
    30,655.40x = 45,972.30 × 10,934.60
  4. Step 4: Simplify right side
    30,655.40x = 502,688,711.58
  5. Step 5: Solve for x
    x = 502,688,711.58/30,655.40
  6. Step 6: Final answer
    x = 16,398.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.