Home / 30,985,260.81-42,758,801.40-16,855,978.83

Finding the Fourth Proportional to 30,985,260.81, 42,758,801.40 and 16,855,978.83

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Solution

The fourth proportional to 30,985,260.81, 42,758,801.40 and 16,855,978.83 is: 23,260,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985,260.81 : 42,758,801.40 = 16,855,978.83 : x
  2. Step 2: Convert to fraction form
    30,985,260.81/42,758,801.40 = 16,855,978.83/x
  3. Step 3: Cross multiply
    30,985,260.81x = 42,758,801.40 × 16,855,978.83
  4. Step 4: Simplify right side
    30,985,260.81x = 720,741,451,194,574.25
  5. Step 5: Solve for x
    x = 720,741,451,194,574.25/30,985,260.81
  6. Step 6: Final answer
    x = 23,260,783.75

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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.