Home / 21,341,875.20-31,970,822.40-12,796,828.80

Finding the Fourth Proportional to 21,341,875.20, 31,970,822.40 and 12,796,828.80

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Solution

The fourth proportional to 21,341,875.20, 31,970,822.40 and 12,796,828.80 is: 19,170,065.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341,875.20 : 31,970,822.40 = 12,796,828.80 : x
  2. Step 2: Convert to fraction form
    21,341,875.20/31,970,822.40 = 12,796,828.80/x
  3. Step 3: Cross multiply
    21,341,875.20x = 31,970,822.40 × 12,796,828.80
  4. Step 4: Simplify right side
    21,341,875.20x = 409,125,140,848,005.12
  5. Step 5: Solve for x
    x = 409,125,140,848,005.12/21,341,875.20
  6. Step 6: Final answer
    x = 19,170,065.28

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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.