Home / 21,284,048.40-31,926,072.60-7,830,531.60

Finding the Fourth Proportional to 21,284,048.40, 31,926,072.60 and 7,830,531.60

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Solution

The fourth proportional to 21,284,048.40, 31,926,072.60 and 7,830,531.60 is: 11,745,797.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284,048.40 : 31,926,072.60 = 7,830,531.60 : x
  2. Step 2: Convert to fraction form
    21,284,048.40/31,926,072.60 = 7,830,531.60/x
  3. Step 3: Cross multiply
    21,284,048.40x = 31,926,072.60 × 7,830,531.60
  4. Step 4: Simplify right side
    21,284,048.40x = 249,998,120,358,194.16
  5. Step 5: Solve for x
    x = 249,998,120,358,194.16/21,284,048.40
  6. Step 6: Final answer
    x = 11,745,797.40

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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.