Home / 21,058,644.30-31,567,786.91-8,911,397.76

Finding the Fourth Proportional to 21,058,644.30, 31,567,786.91 and 8,911,397.76

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Solution

The fourth proportional to 21,058,644.30, 31,567,786.91 and 8,911,397.76 is: 13,358,557.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058,644.30 : 31,567,786.91 = 8,911,397.76 : x
  2. Step 2: Convert to fraction form
    21,058,644.30/31,567,786.91 = 8,911,397.76/x
  3. Step 3: Cross multiply
    21,058,644.30x = 31,567,786.91 × 8,911,397.76
  4. Step 4: Simplify right side
    21,058,644.30x = 281,313,105,557,931.31
  5. Step 5: Solve for x
    x = 281,313,105,557,931.31/21,058,644.30
  6. Step 6: Final answer
    x = 13,358,557.25

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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.