Home / 21,225,720.36-29,282,989.16-13,382,653.56

Finding the Fourth Proportional to 21,225,720.36, 29,282,989.16 and 13,382,653.56

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Solution

The fourth proportional to 21,225,720.36, 29,282,989.16 and 13,382,653.56 is: 18,462,699.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225,720.36 : 29,282,989.16 = 13,382,653.56 : x
  2. Step 2: Convert to fraction form
    21,225,720.36/29,282,989.16 = 13,382,653.56/x
  3. Step 3: Cross multiply
    21,225,720.36x = 29,282,989.16 × 13,382,653.56
  4. Step 4: Simplify right side
    21,225,720.36x = 391,884,099,129,515.44
  5. Step 5: Solve for x
    x = 391,884,099,129,515.44/21,225,720.36
  6. Step 6: Final answer
    x = 18,462,699.62

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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.