Home / 20,958,045.60-31,374,082.80-12,433,994.40

Finding the Fourth Proportional to 20,958,045.60, 31,374,082.80 and 12,433,994.40

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Solution

The fourth proportional to 20,958,045.60, 31,374,082.80 and 12,433,994.40 is: 18,613,623.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958,045.60 : 31,374,082.80 = 12,433,994.40 : x
  2. Step 2: Convert to fraction form
    20,958,045.60/31,374,082.80 = 12,433,994.40/x
  3. Step 3: Cross multiply
    20,958,045.60x = 31,374,082.80 × 12,433,994.40
  4. Step 4: Simplify right side
    20,958,045.60x = 390,105,169,840,336.31
  5. Step 5: Solve for x
    x = 390,105,169,840,336.31/20,958,045.60
  6. Step 6: Final answer
    x = 18,613,623.49

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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.