Home / 20,936,133.80-31,404,200.70-19,424,479.40

Finding the Fourth Proportional to 20,936,133.80, 31,404,200.70 and 19,424,479.40

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Solution

The fourth proportional to 20,936,133.80, 31,404,200.70 and 19,424,479.40 is: 29,136,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936,133.80 : 31,404,200.70 = 19,424,479.40 : x
  2. Step 2: Convert to fraction form
    20,936,133.80/31,404,200.70 = 19,424,479.40/x
  3. Step 3: Cross multiply
    20,936,133.80x = 31,404,200.70 × 19,424,479.40
  4. Step 4: Simplify right side
    20,936,133.80x = 610,010,249,570,615.50
  5. Step 5: Solve for x
    x = 610,010,249,570,615.50/20,936,133.80
  6. Step 6: Final answer
    x = 29,136,719.10

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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.