Home / 28,921,211.32-39,874,952.52-21,172,801.56

Finding the Fourth Proportional to 28,921,211.32, 39,874,952.52 and 21,172,801.56

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Solution

The fourth proportional to 28,921,211.32, 39,874,952.52 and 21,172,801.56 is: 29,191,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921,211.32 : 39,874,952.52 = 21,172,801.56 : x
  2. Step 2: Convert to fraction form
    28,921,211.32/39,874,952.52 = 21,172,801.56/x
  3. Step 3: Cross multiply
    28,921,211.32x = 39,874,952.52 × 21,172,801.56
  4. Step 4: Simplify right side
    28,921,211.32x = 844,264,456,920,382
  5. Step 5: Solve for x
    x = 844,264,456,920,382/28,921,211.32
  6. Step 6: Final answer
    x = 29,191,877.46

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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.