Home / 12,672,007.60-19,008,011.40-8,640,929.20

Finding the Fourth Proportional to 12,672,007.60, 19,008,011.40 and 8,640,929.20

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Solution

The fourth proportional to 12,672,007.60, 19,008,011.40 and 8,640,929.20 is: 12,961,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672,007.60 : 19,008,011.40 = 8,640,929.20 : x
  2. Step 2: Convert to fraction form
    12,672,007.60/19,008,011.40 = 8,640,929.20/x
  3. Step 3: Cross multiply
    12,672,007.60x = 19,008,011.40 × 8,640,929.20
  4. Step 4: Simplify right side
    12,672,007.60x = 164,246,880,740,192.84
  5. Step 5: Solve for x
    x = 164,246,880,740,192.84/12,672,007.60
  6. Step 6: Final answer
    x = 12,961,393.80

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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.