Home / 20,721,968.89-31,089,426.87-7,075,438.81

Finding the Fourth Proportional to 20,721,968.89, 31,089,426.87 and 7,075,438.81

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Solution

The fourth proportional to 20,721,968.89, 31,089,426.87 and 7,075,438.81 is: 10,615,368.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,968.89 : 31,089,426.87 = 7,075,438.81 : x
  2. Step 2: Convert to fraction form
    20,721,968.89/31,089,426.87 = 7,075,438.81/x
  3. Step 3: Cross multiply
    20,721,968.89x = 31,089,426.87 × 7,075,438.81
  4. Step 4: Simplify right side
    20,721,968.89x = 219,971,337,456,654.81
  5. Step 5: Solve for x
    x = 219,971,337,456,654.81/20,721,968.89
  6. Step 6: Final answer
    x = 10,615,368.58

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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.