Home / 20,020,912.40-30,031,368.60-7,243,389.20

Finding the Fourth Proportional to 20,020,912.40, 30,031,368.60 and 7,243,389.20

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Solution

The fourth proportional to 20,020,912.40, 30,031,368.60 and 7,243,389.20 is: 10,865,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020,912.40 : 30,031,368.60 = 7,243,389.20 : x
  2. Step 2: Convert to fraction form
    20,020,912.40/30,031,368.60 = 7,243,389.20/x
  3. Step 3: Cross multiply
    20,020,912.40x = 30,031,368.60 × 7,243,389.20
  4. Step 4: Simplify right side
    20,020,912.40x = 217,528,890,978,459.12
  5. Step 5: Solve for x
    x = 217,528,890,978,459.12/20,020,912.40
  6. Step 6: Final answer
    x = 10,865,083.80

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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.