Home / 30,997.47-42,777.40-18,898.65

Finding the Fourth Proportional to 30,997.47, 42,777.40 and 18,898.65

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Solution

The fourth proportional to 30,997.47, 42,777.40 and 18,898.65 is: 26,080.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,997.47 : 42,777.40 = 18,898.65 : x
  2. Step 2: Convert to fraction form
    30,997.47/42,777.40 = 18,898.65/x
  3. Step 3: Cross multiply
    30,997.47x = 42,777.40 × 18,898.65
  4. Step 4: Simplify right side
    30,997.47x = 808,435,188.24
  5. Step 5: Solve for x
    x = 808,435,188.24/30,997.47
  6. Step 6: Final answer
    x = 26,080.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.