Home / 21,013,868.29-28,999,859.35-12,192,653.46

Finding the Fourth Proportional to 21,013,868.29, 28,999,859.35 and 12,192,653.46

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Solution

The fourth proportional to 21,013,868.29, 28,999,859.35 and 12,192,653.46 is: 16,826,280.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013,868.29 : 28,999,859.35 = 12,192,653.46 : x
  2. Step 2: Convert to fraction form
    21,013,868.29/28,999,859.35 = 12,192,653.46/x
  3. Step 3: Cross multiply
    21,013,868.29x = 28,999,859.35 × 12,192,653.46
  4. Step 4: Simplify right side
    21,013,868.29x = 353,585,235,237,328.25
  5. Step 5: Solve for x
    x = 353,585,235,237,328.25/21,013,868.29
  6. Step 6: Final answer
    x = 16,826,280.17

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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.