Home / 21,018,051.90-31,527,077.85-9,680,643.90

Finding the Fourth Proportional to 21,018,051.90, 31,527,077.85 and 9,680,643.90

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Solution

The fourth proportional to 21,018,051.90, 31,527,077.85 and 9,680,643.90 is: 14,520,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018,051.90 : 31,527,077.85 = 9,680,643.90 : x
  2. Step 2: Convert to fraction form
    21,018,051.90/31,527,077.85 = 9,680,643.90/x
  3. Step 3: Cross multiply
    21,018,051.90x = 31,527,077.85 × 9,680,643.90
  4. Step 4: Simplify right side
    21,018,051.90x = 305,202,413,873,427.62
  5. Step 5: Solve for x
    x = 305,202,413,873,427.62/21,018,051.90
  6. Step 6: Final answer
    x = 14,520,965.85

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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.