Home / 20,983,100.10-31,474,650.15-12,459,048.90

Finding the Fourth Proportional to 20,983,100.10, 31,474,650.15 and 12,459,048.90

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Solution

The fourth proportional to 20,983,100.10, 31,474,650.15 and 12,459,048.90 is: 18,688,573.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983,100.10 : 31,474,650.15 = 12,459,048.90 : x
  2. Step 2: Convert to fraction form
    20,983,100.10/31,474,650.15 = 12,459,048.90/x
  3. Step 3: Cross multiply
    20,983,100.10x = 31,474,650.15 × 12,459,048.90
  4. Step 4: Simplify right side
    20,983,100.10x = 392,144,205,329,242.31
  5. Step 5: Solve for x
    x = 392,144,205,329,242.31/20,983,100.10
  6. Step 6: Final answer
    x = 18,688,573.35

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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.