Home / 30,557.10-42,169.23-18,620.94

Finding the Fourth Proportional to 30,557.10, 42,169.23 and 18,620.94

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Solution

The fourth proportional to 30,557.10, 42,169.23 and 18,620.94 is: 25,697.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,557.10 : 42,169.23 = 18,620.94 : x
  2. Step 2: Convert to fraction form
    30,557.10/42,169.23 = 18,620.94/x
  3. Step 3: Cross multiply
    30,557.10x = 42,169.23 × 18,620.94
  4. Step 4: Simplify right side
    30,557.10x = 785,230,701.68
  5. Step 5: Solve for x
    x = 785,230,701.68/30,557.10
  6. Step 6: Final answer
    x = 25,697.16

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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.