Home / 21,019,973.12-29,008,423.84-13,282,192.16

Finding the Fourth Proportional to 21,019,973.12, 29,008,423.84 and 13,282,192.16

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Solution

The fourth proportional to 21,019,973.12, 29,008,423.84 and 13,282,192.16 is: 18,329,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019,973.12 : 29,008,423.84 = 13,282,192.16 : x
  2. Step 2: Convert to fraction form
    21,019,973.12/29,008,423.84 = 13,282,192.16/x
  3. Step 3: Cross multiply
    21,019,973.12x = 29,008,423.84 × 13,282,192.16
  4. Step 4: Simplify right side
    21,019,973.12x = 385,295,459,701,605.12
  5. Step 5: Solve for x
    x = 385,295,459,701,605.12/21,019,973.12
  6. Step 6: Final answer
    x = 18,329,969.19

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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.