Home / 18,779,216.68-28,179,287.58-10,143,142.12

Finding the Fourth Proportional to 18,779,216.68, 28,179,287.58 and 10,143,142.12

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Solution

The fourth proportional to 18,779,216.68, 28,179,287.58 and 10,143,142.12 is: 15,220,364.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779,216.68 : 28,179,287.58 = 10,143,142.12 : x
  2. Step 2: Convert to fraction form
    18,779,216.68/28,179,287.58 = 10,143,142.12/x
  3. Step 3: Cross multiply
    18,779,216.68x = 28,179,287.58 × 10,143,142.12
  4. Step 4: Simplify right side
    18,779,216.68x = 285,826,518,764,290.81
  5. Step 5: Solve for x
    x = 285,826,518,764,290.81/18,779,216.68
  6. Step 6: Final answer
    x = 15,220,364.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.