Home / 18,937,239.60-28,405,859.40-13,142,564.40

Finding the Fourth Proportional to 18,937,239.60, 28,405,859.40 and 13,142,564.40

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Solution

The fourth proportional to 18,937,239.60, 28,405,859.40 and 13,142,564.40 is: 19,713,846.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937,239.60 : 28,405,859.40 = 13,142,564.40 : x
  2. Step 2: Convert to fraction form
    18,937,239.60/28,405,859.40 = 13,142,564.40/x
  3. Step 3: Cross multiply
    18,937,239.60x = 28,405,859.40 × 13,142,564.40
  4. Step 4: Simplify right side
    18,937,239.60x = 373,325,836,501,845.38
  5. Step 5: Solve for x
    x = 373,325,836,501,845.38/18,937,239.60
  6. Step 6: Final answer
    x = 19,713,846.60

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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.