Home / 18,126,402.78-25,011,508.95-10,390,021.50

Finding the Fourth Proportional to 18,126,402.78, 25,011,508.95 and 10,390,021.50

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Solution

The fourth proportional to 18,126,402.78, 25,011,508.95 and 10,390,021.50 is: 14,336,551.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126,402.78 : 25,011,508.95 = 10,390,021.50 : x
  2. Step 2: Convert to fraction form
    18,126,402.78/25,011,508.95 = 10,390,021.50/x
  3. Step 3: Cross multiply
    18,126,402.78x = 25,011,508.95 × 10,390,021.50
  4. Step 4: Simplify right side
    18,126,402.78x = 259,870,115,737,942.41
  5. Step 5: Solve for x
    x = 259,870,115,737,942.41/18,126,402.78
  6. Step 6: Final answer
    x = 14,336,551.98

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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.