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Finding the Fourth Proportional to 12,798,645.60, 19,197,968.40 and 9,397,423.20

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Solution

The fourth proportional to 12,798,645.60, 19,197,968.40 and 9,397,423.20 is: 14,096,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798,645.60 : 19,197,968.40 = 9,397,423.20 : x
  2. Step 2: Convert to fraction form
    12,798,645.60/19,197,968.40 = 9,397,423.20/x
  3. Step 3: Cross multiply
    12,798,645.60x = 19,197,968.40 × 9,397,423.20
  4. Step 4: Simplify right side
    12,798,645.60x = 180,411,433,635,026.84
  5. Step 5: Solve for x
    x = 180,411,433,635,026.84/12,798,645.60
  6. Step 6: Final answer
    x = 14,096,134.80

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1.5x scale

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.