Home / 30,269.10-45,403.65-20,937.90

Finding the Fourth Proportional to 30,269.10, 45,403.65 and 20,937.90

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Solution

The fourth proportional to 30,269.10, 45,403.65 and 20,937.90 is: 31,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,269.10 : 45,403.65 = 20,937.90 : x
  2. Step 2: Convert to fraction form
    30,269.10/45,403.65 = 20,937.90/x
  3. Step 3: Cross multiply
    30,269.10x = 45,403.65 × 20,937.90
  4. Step 4: Simplify right side
    30,269.10x = 950,657,083.34
  5. Step 5: Solve for x
    x = 950,657,083.34/30,269.10
  6. Step 6: Final answer
    x = 31,406.85

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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.