Home / 20,790,005.60-31,151,830.80-17,405,890.40

Finding the Fourth Proportional to 20,790,005.60, 31,151,830.80 and 17,405,890.40

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Solution

The fourth proportional to 20,790,005.60, 31,151,830.80 and 17,405,890.40 is: 26,081,058.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,005.60 : 31,151,830.80 = 17,405,890.40 : x
  2. Step 2: Convert to fraction form
    20,790,005.60/31,151,830.80 = 17,405,890.40/x
  3. Step 3: Cross multiply
    20,790,005.60x = 31,151,830.80 × 17,405,890.40
  4. Step 4: Simplify right side
    20,790,005.60x = 542,225,352,664,144.31
  5. Step 5: Solve for x
    x = 542,225,352,664,144.31/20,790,005.60
  6. Step 6: Final answer
    x = 26,081,058.52

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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.