Home / 20,958,061.60-31,374,106.80-12,434,010.40

Finding the Fourth Proportional to 20,958,061.60, 31,374,106.80 and 12,434,010.40

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Solution

The fourth proportional to 20,958,061.60, 31,374,106.80 and 12,434,010.40 is: 18,613,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,061.60 : 31,374,106.80 = 12,434,010.40 : x
  2. Step 2: Convert to fraction form
    20,958,061.60/31,374,106.80 = 12,434,010.40/x
  3. Step 3: Cross multiply
    20,958,061.60x = 31,374,106.80 × 12,434,010.40
  4. Step 4: Simplify right side
    20,958,061.60x = 390,105,970,241,910.75
  5. Step 5: Solve for x
    x = 390,105,970,241,910.75/20,958,061.60
  6. Step 6: Final answer
    x = 18,613,647.47

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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.