Home / 19,687,639.80-29,531,459.70-12,089,969.40

Finding the Fourth Proportional to 19,687,639.80, 29,531,459.70 and 12,089,969.40

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Solution

The fourth proportional to 19,687,639.80, 29,531,459.70 and 12,089,969.40 is: 18,134,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687,639.80 : 29,531,459.70 = 12,089,969.40 : x
  2. Step 2: Convert to fraction form
    19,687,639.80/29,531,459.70 = 12,089,969.40/x
  3. Step 3: Cross multiply
    19,687,639.80x = 29,531,459.70 × 12,089,969.40
  4. Step 4: Simplify right side
    19,687,639.80x = 357,034,444,110,333.19
  5. Step 5: Solve for x
    x = 357,034,444,110,333.19/19,687,639.80
  6. Step 6: Final answer
    x = 18,134,954.10

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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.