Home / 21,294,420.60-31,941,630.90-12,784,366.20

Finding the Fourth Proportional to 21,294,420.60, 31,941,630.90 and 12,784,366.20

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Solution

The fourth proportional to 21,294,420.60, 31,941,630.90 and 12,784,366.20 is: 19,176,549.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294,420.60 : 31,941,630.90 = 12,784,366.20 : x
  2. Step 2: Convert to fraction form
    21,294,420.60/31,941,630.90 = 12,784,366.20/x
  3. Step 3: Cross multiply
    21,294,420.60x = 31,941,630.90 × 12,784,366.20
  4. Step 4: Simplify right side
    21,294,420.60x = 408,353,506,450,835.56
  5. Step 5: Solve for x
    x = 408,353,506,450,835.56/21,294,420.60
  6. Step 6: Final answer
    x = 19,176,549.30

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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.