Home / 21,014,120.10-31,521,180.15-7,382,658.45

Finding the Fourth Proportional to 21,014,120.10, 31,521,180.15 and 7,382,658.45

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Solution

The fourth proportional to 21,014,120.10, 31,521,180.15 and 7,382,658.45 is: 11,073,987.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014,120.10 : 31,521,180.15 = 7,382,658.45 : x
  2. Step 2: Convert to fraction form
    21,014,120.10/31,521,180.15 = 7,382,658.45/x
  3. Step 3: Cross multiply
    21,014,120.10x = 31,521,180.15 × 7,382,658.45
  4. Step 4: Simplify right side
    21,014,120.10x = 232,710,106,988,369.75
  5. Step 5: Solve for x
    x = 232,710,106,988,369.75/21,014,120.10
  6. Step 6: Final answer
    x = 11,073,987.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.