Home / 30,840.48-42,555.25-18,088.85

Finding the Fourth Proportional to 30,840.48, 42,555.25 and 18,088.85

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Solution

The fourth proportional to 30,840.48, 42,555.25 and 18,088.85 is: 24,959.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,840.48 : 42,555.25 = 18,088.85 : x
  2. Step 2: Convert to fraction form
    30,840.48/42,555.25 = 18,088.85/x
  3. Step 3: Cross multiply
    30,840.48x = 42,555.25 × 18,088.85
  4. Step 4: Simplify right side
    30,840.48x = 769,775,533.96
  5. Step 5: Solve for x
    x = 769,775,533.96/30,840.48
  6. Step 6: Final answer
    x = 24,959.91

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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.