Home / 20,804,538.10-31,206,807.15-12,742,381.30

Finding the Fourth Proportional to 20,804,538.10, 31,206,807.15 and 12,742,381.30

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Solution

The fourth proportional to 20,804,538.10, 31,206,807.15 and 12,742,381.30 is: 19,113,571.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,538.10 : 31,206,807.15 = 12,742,381.30 : x
  2. Step 2: Convert to fraction form
    20,804,538.10/31,206,807.15 = 12,742,381.30/x
  3. Step 3: Cross multiply
    20,804,538.10x = 31,206,807.15 × 12,742,381.30
  4. Step 4: Simplify right side
    20,804,538.10x = 397,649,035,860,866.31
  5. Step 5: Solve for x
    x = 397,649,035,860,866.31/20,804,538.10
  6. Step 6: Final answer
    x = 19,113,571.95

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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.