Home / 21,283,975.20-31,925,962.80-12,773,920.80

Finding the Fourth Proportional to 21,283,975.20, 31,925,962.80 and 12,773,920.80

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Solution

The fourth proportional to 21,283,975.20, 31,925,962.80 and 12,773,920.80 is: 19,160,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283,975.20 : 31,925,962.80 = 12,773,920.80 : x
  2. Step 2: Convert to fraction form
    21,283,975.20/31,925,962.80 = 12,773,920.80/x
  3. Step 3: Cross multiply
    21,283,975.20x = 31,925,962.80 × 12,773,920.80
  4. Step 4: Simplify right side
    21,283,975.20x = 407,819,720,270,946.25
  5. Step 5: Solve for x
    x = 407,819,720,270,946.25/21,283,975.20
  6. Step 6: Final answer
    x = 19,160,881.20

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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.