Home / 20,406,833.36-28,161,430.24-11,239,476.12

Finding the Fourth Proportional to 20,406,833.36, 28,161,430.24 and 11,239,476.12

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Solution

The fourth proportional to 20,406,833.36, 28,161,430.24 and 11,239,476.12 is: 15,510,477.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406,833.36 : 28,161,430.24 = 11,239,476.12 : x
  2. Step 2: Convert to fraction form
    20,406,833.36/28,161,430.24 = 11,239,476.12/x
  3. Step 3: Cross multiply
    20,406,833.36x = 28,161,430.24 × 11,239,476.12
  4. Step 4: Simplify right side
    20,406,833.36x = 316,519,722,687,525.81
  5. Step 5: Solve for x
    x = 316,519,722,687,525.81/20,406,833.36
  6. Step 6: Final answer
    x = 15,510,477.16

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1.5x scale

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.