Home / 12,487,991.40-18,731,987.10-7,365,162.60

Finding the Fourth Proportional to 12,487,991.40, 18,731,987.10 and 7,365,162.60

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Solution

The fourth proportional to 12,487,991.40, 18,731,987.10 and 7,365,162.60 is: 11,047,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487,991.40 : 18,731,987.10 = 7,365,162.60 : x
  2. Step 2: Convert to fraction form
    12,487,991.40/18,731,987.10 = 7,365,162.60/x
  3. Step 3: Cross multiply
    12,487,991.40x = 18,731,987.10 × 7,365,162.60
  4. Step 4: Simplify right side
    12,487,991.40x = 137,964,130,812,602.47
  5. Step 5: Solve for x
    x = 137,964,130,812,602.47/12,487,991.40
  6. Step 6: Final answer
    x = 11,047,743.90

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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.