Home / 21,265,890.40-31,898,835.60-9,907,487.20

Finding the Fourth Proportional to 21,265,890.40, 31,898,835.60 and 9,907,487.20

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Solution

The fourth proportional to 21,265,890.40, 31,898,835.60 and 9,907,487.20 is: 14,861,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265,890.40 : 31,898,835.60 = 9,907,487.20 : x
  2. Step 2: Convert to fraction form
    21,265,890.40/31,898,835.60 = 9,907,487.20/x
  3. Step 3: Cross multiply
    21,265,890.40x = 31,898,835.60 × 9,907,487.20
  4. Step 4: Simplify right side
    21,265,890.40x = 316,037,305,401,904.31
  5. Step 5: Solve for x
    x = 316,037,305,401,904.31/21,265,890.40
  6. Step 6: Final answer
    x = 14,861,230.80

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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.