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Finding the Fourth Proportional to 13,308,915.60, 19,963,308.60 and 5,216,173.20

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Solution

The fourth proportional to 13,308,915.60, 19,963,308.60 and 5,216,173.20 is: 7,824,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308,915.60 : 19,963,308.60 = 5,216,173.20 : x
  2. Step 2: Convert to fraction form
    13,308,915.60/19,963,308.60 = 5,216,173.20/x
  3. Step 3: Cross multiply
    13,308,915.60x = 19,963,308.60 × 5,216,173.20
  4. Step 4: Simplify right side
    13,308,915.60x = 104,132,075,302,649.53
  5. Step 5: Solve for x
    x = 104,132,075,302,649.53/13,308,915.60
  6. Step 6: Final answer
    x = 7,824,234.40

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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.