Home / 30,899.52-42,624.90-18,803.70

Finding the Fourth Proportional to 30,899.52, 42,624.90 and 18,803.70

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Solution

The fourth proportional to 30,899.52, 42,624.90 and 18,803.70 is: 25,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899.52 : 42,624.90 = 18,803.70 : x
  2. Step 2: Convert to fraction form
    30,899.52/42,624.90 = 18,803.70/x
  3. Step 3: Cross multiply
    30,899.52x = 42,624.90 × 18,803.70
  4. Step 4: Simplify right side
    30,899.52x = 801,505,832.13
  5. Step 5: Solve for x
    x = 801,505,832.13/30,899.52
  6. Step 6: Final answer
    x = 25,939.10

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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.