Home / 21,069,695.50-31,607,073.32-7,420,018.86

Finding the Fourth Proportional to 21,069,695.50, 31,607,073.32 and 7,420,018.86

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Solution

The fourth proportional to 21,069,695.50, 31,607,073.32 and 7,420,018.86 is: 11,130,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,695.50 : 31,607,073.32 = 7,420,018.86 : x
  2. Step 2: Convert to fraction form
    21,069,695.50/31,607,073.32 = 7,420,018.86/x
  3. Step 3: Cross multiply
    21,069,695.50x = 31,607,073.32 × 7,420,018.86
  4. Step 4: Simplify right side
    21,069,695.50x = 234,525,080,106,702.75
  5. Step 5: Solve for x
    x = 234,525,080,106,702.75/21,069,695.50
  6. Step 6: Final answer
    x = 11,130,919.29

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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.