Home / 15,439,822.20-21,306,543.48-8,913,231

Finding the Fourth Proportional to 15,439,822.20, 21,306,543.48 and 8,913,231

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Solution

The fourth proportional to 15,439,822.20, 21,306,543.48 and 8,913,231 is: 12,300,021.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439,822.20 : 21,306,543.48 = 8,913,231 : x
  2. Step 2: Convert to fraction form
    15,439,822.20/21,306,543.48 = 8,913,231/x
  3. Step 3: Cross multiply
    15,439,822.20x = 21,306,543.48 × 8,913,231
  4. Step 4: Simplify right side
    15,439,822.20x = 189,910,143,848,783.88
  5. Step 5: Solve for x
    x = 189,910,143,848,783.88/15,439,822.20
  6. Step 6: Final answer
    x = 12,300,021.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.