Home / 15,020,933.79-20,728,888.56-8,145,421.32

Finding the Fourth Proportional to 15,020,933.79, 20,728,888.56 and 8,145,421.32

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Solution

The fourth proportional to 15,020,933.79, 20,728,888.56 and 8,145,421.32 is: 11,240,681.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020,933.79 : 20,728,888.56 = 8,145,421.32 : x
  2. Step 2: Convert to fraction form
    15,020,933.79/20,728,888.56 = 8,145,421.32/x
  3. Step 3: Cross multiply
    15,020,933.79x = 20,728,888.56 × 8,145,421.32
  4. Step 4: Simplify right side
    15,020,933.79x = 168,845,530,816,528.09
  5. Step 5: Solve for x
    x = 168,845,530,816,528.09/15,020,933.79
  6. Step 6: Final answer
    x = 11,240,681.38

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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.