Home / 20,971,214.60-31,456,821.90-18,955,675.40

Finding the Fourth Proportional to 20,971,214.60, 31,456,821.90 and 18,955,675.40

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Solution

The fourth proportional to 20,971,214.60, 31,456,821.90 and 18,955,675.40 is: 28,433,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971,214.60 : 31,456,821.90 = 18,955,675.40 : x
  2. Step 2: Convert to fraction form
    20,971,214.60/31,456,821.90 = 18,955,675.40/x
  3. Step 3: Cross multiply
    20,971,214.60x = 31,456,821.90 × 18,955,675.40
  4. Step 4: Simplify right side
    20,971,214.60x = 596,285,305,052,011.12
  5. Step 5: Solve for x
    x = 596,285,305,052,011.12/20,971,214.60
  6. Step 6: Final answer
    x = 28,433,513.10

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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.