Home / 20,698,742.10-31,048,113.15-7,067,280.45

Finding the Fourth Proportional to 20,698,742.10, 31,048,113.15 and 7,067,280.45

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Solution

The fourth proportional to 20,698,742.10, 31,048,113.15 and 7,067,280.45 is: 10,600,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698,742.10 : 31,048,113.15 = 7,067,280.45 : x
  2. Step 2: Convert to fraction form
    20,698,742.10/31,048,113.15 = 7,067,280.45/x
  3. Step 3: Cross multiply
    20,698,742.10x = 31,048,113.15 × 7,067,280.45
  4. Step 4: Simplify right side
    20,698,742.10x = 219,425,723,074,382.91
  5. Step 5: Solve for x
    x = 219,425,723,074,382.91/20,698,742.10
  6. Step 6: Final answer
    x = 10,600,920.68

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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.