Home / 13,764,987.65-18,990,306.91-7,881,477.72

Finding the Fourth Proportional to 13,764,987.65, 18,990,306.91 and 7,881,477.72

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Solution

The fourth proportional to 13,764,987.65, 18,990,306.91 and 7,881,477.72 is: 10,873,361.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764,987.65 : 18,990,306.91 = 7,881,477.72 : x
  2. Step 2: Convert to fraction form
    13,764,987.65/18,990,306.91 = 7,881,477.72/x
  3. Step 3: Cross multiply
    13,764,987.65x = 18,990,306.91 × 7,881,477.72
  4. Step 4: Simplify right side
    13,764,987.65x = 149,671,680,807,127.03
  5. Step 5: Solve for x
    x = 149,671,680,807,127.03/13,764,987.65
  6. Step 6: Final answer
    x = 10,873,361.07

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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.