Home / 21,087,057.60-31,567,600.80-12,563,006.40

Finding the Fourth Proportional to 21,087,057.60, 31,567,600.80 and 12,563,006.40

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Solution

The fourth proportional to 21,087,057.60, 31,567,600.80 and 12,563,006.40 is: 18,806,984.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087,057.60 : 31,567,600.80 = 12,563,006.40 : x
  2. Step 2: Convert to fraction form
    21,087,057.60/31,567,600.80 = 12,563,006.40/x
  3. Step 3: Cross multiply
    21,087,057.60x = 31,567,600.80 × 12,563,006.40
  4. Step 4: Simplify right side
    21,087,057.60x = 396,583,970,883,045.12
  5. Step 5: Solve for x
    x = 396,583,970,883,045.12/21,087,057.60
  6. Step 6: Final answer
    x = 18,806,984.76

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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.