Home / 20,308,113.65-28,025,030.96-11,015,660.45

Finding the Fourth Proportional to 20,308,113.65, 28,025,030.96 and 11,015,660.45

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Solution

The fourth proportional to 20,308,113.65, 28,025,030.96 and 11,015,660.45 is: 15,201,521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308,113.65 : 28,025,030.96 = 11,015,660.45 : x
  2. Step 2: Convert to fraction form
    20,308,113.65/28,025,030.96 = 11,015,660.45/x
  3. Step 3: Cross multiply
    20,308,113.65x = 28,025,030.96 × 11,015,660.45
  4. Step 4: Simplify right side
    20,308,113.65x = 308,714,225,101,019.19
  5. Step 5: Solve for x
    x = 308,714,225,101,019.19/20,308,113.65
  6. Step 6: Final answer
    x = 15,201,521.45

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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.