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Finding the Fourth Proportional to 21,865,365.60, 32,798,048.40 and 20,689,634.40

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Solution

The fourth proportional to 21,865,365.60, 32,798,048.40 and 20,689,634.40 is: 31,034,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865,365.60 : 32,798,048.40 = 20,689,634.40 : x
  2. Step 2: Convert to fraction form
    21,865,365.60/32,798,048.40 = 20,689,634.40/x
  3. Step 3: Cross multiply
    21,865,365.60x = 32,798,048.40 × 20,689,634.40
  4. Step 4: Simplify right side
    21,865,365.60x = 678,579,630,429,504.88
  5. Step 5: Solve for x
    x = 678,579,630,429,504.88/21,865,365.60
  6. Step 6: Final answer
    x = 31,034,451.60

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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.