Home / 20,804,565.85-31,206,848.78-12,742,409.05

Finding the Fourth Proportional to 20,804,565.85, 31,206,848.78 and 12,742,409.05

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Solution

The fourth proportional to 20,804,565.85, 31,206,848.78 and 12,742,409.05 is: 19,113,613.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,565.85 : 31,206,848.78 = 12,742,409.05 : x
  2. Step 2: Convert to fraction form
    20,804,565.85/31,206,848.78 = 12,742,409.05/x
  3. Step 3: Cross multiply
    20,804,565.85x = 31,206,848.78 × 12,742,409.05
  4. Step 4: Simplify right side
    20,804,565.85x = 397,650,432,316,253.50
  5. Step 5: Solve for x
    x = 397,650,432,316,253.50/20,804,565.85
  6. Step 6: Final answer
    x = 19,113,613.58

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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.