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Finding the Fourth Proportional to 29,931.80, 44,903.10 and 12,403.40

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Solution

The fourth proportional to 29,931.80, 44,903.10 and 12,403.40 is: 18,607.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,931.80 : 44,903.10 = 12,403.40 : x
  2. Step 2: Convert to fraction form
    29,931.80/44,903.10 = 12,403.40/x
  3. Step 3: Cross multiply
    29,931.80x = 44,903.10 × 12,403.40
  4. Step 4: Simplify right side
    29,931.80x = 556,951,110.54
  5. Step 5: Solve for x
    x = 556,951,110.54/29,931.80
  6. Step 6: Final answer
    x = 18,607.34

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1.5x scale

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.