Home / 30,858,790.47-42,584,643.30-16,920,260.18

Finding the Fourth Proportional to 30,858,790.47, 42,584,643.30 and 16,920,260.18

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Solution

The fourth proportional to 30,858,790.47, 42,584,643.30 and 16,920,260.18 is: 23,349,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,858,790.47 : 42,584,643.30 = 16,920,260.18 : x
  2. Step 2: Convert to fraction form
    30,858,790.47/42,584,643.30 = 16,920,260.18/x
  3. Step 3: Cross multiply
    30,858,790.47x = 42,584,643.30 × 16,920,260.18
  4. Step 4: Simplify right side
    30,858,790.47x = 720,543,244,308,493.75
  5. Step 5: Solve for x
    x = 720,543,244,308,493.75/30,858,790.47
  6. Step 6: Final answer
    x = 23,349,691.72

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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.