Home / 21,294,769.60-31,942,154.40-12,791,713.60

Finding the Fourth Proportional to 21,294,769.60, 31,942,154.40 and 12,791,713.60

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Solution

The fourth proportional to 21,294,769.60, 31,942,154.40 and 12,791,713.60 is: 19,187,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294,769.60 : 31,942,154.40 = 12,791,713.60 : x
  2. Step 2: Convert to fraction form
    21,294,769.60/31,942,154.40 = 12,791,713.60/x
  3. Step 3: Cross multiply
    21,294,769.60x = 31,942,154.40 × 12,791,713.60
  4. Step 4: Simplify right side
    21,294,769.60x = 408,594,890,851,779.81
  5. Step 5: Solve for x
    x = 408,594,890,851,779.81/21,294,769.60
  6. Step 6: Final answer
    x = 19,187,570.40

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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.