Home / 13,539,669.68-18,684,742.80-7,659,178.22

Finding the Fourth Proportional to 13,539,669.68, 18,684,742.80 and 7,659,178.22

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Solution

The fourth proportional to 13,539,669.68, 18,684,742.80 and 7,659,178.22 is: 10,569,665.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539,669.68 : 18,684,742.80 = 7,659,178.22 : x
  2. Step 2: Convert to fraction form
    13,539,669.68/18,684,742.80 = 7,659,178.22/x
  3. Step 3: Cross multiply
    13,539,669.68x = 18,684,742.80 × 7,659,178.22
  4. Step 4: Simplify right side
    13,539,669.68x = 143,109,775,100,061.81
  5. Step 5: Solve for x
    x = 143,109,775,100,061.81/13,539,669.68
  6. Step 6: Final answer
    x = 10,569,665.18

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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.