Home / 21,273,312.60-31,909,968.90-21,113,880.30

Finding the Fourth Proportional to 21,273,312.60, 31,909,968.90 and 21,113,880.30

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Solution

The fourth proportional to 21,273,312.60, 31,909,968.90 and 21,113,880.30 is: 31,670,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273,312.60 : 31,909,968.90 = 21,113,880.30 : x
  2. Step 2: Convert to fraction form
    21,273,312.60/31,909,968.90 = 21,113,880.30/x
  3. Step 3: Cross multiply
    21,273,312.60x = 31,909,968.90 × 21,113,880.30
  4. Step 4: Simplify right side
    21,273,312.60x = 673,743,263,731,322.62
  5. Step 5: Solve for x
    x = 673,743,263,731,322.62/21,273,312.60
  6. Step 6: Final answer
    x = 31,670,820.45

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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.