Home / 20,731,128.60-31,096,692.90-10,653,432.60

Finding the Fourth Proportional to 20,731,128.60, 31,096,692.90 and 10,653,432.60

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Solution

The fourth proportional to 20,731,128.60, 31,096,692.90 and 10,653,432.60 is: 15,980,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731,128.60 : 31,096,692.90 = 10,653,432.60 : x
  2. Step 2: Convert to fraction form
    20,731,128.60/31,096,692.90 = 10,653,432.60/x
  3. Step 3: Cross multiply
    20,731,128.60x = 31,096,692.90 × 10,653,432.60
  4. Step 4: Simplify right side
    20,731,128.60x = 331,286,521,893,048.50
  5. Step 5: Solve for x
    x = 331,286,521,893,048.50/20,731,128.60
  6. Step 6: Final answer
    x = 15,980,148.90

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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.