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Finding the Fourth Proportional to 12,074,647.80, 18,111,971.70 and 10,880,254.20

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Solution

The fourth proportional to 12,074,647.80, 18,111,971.70 and 10,880,254.20 is: 16,320,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,074,647.80 : 18,111,971.70 = 10,880,254.20 : x
  2. Step 2: Convert to fraction form
    12,074,647.80/18,111,971.70 = 10,880,254.20/x
  3. Step 3: Cross multiply
    12,074,647.80x = 18,111,971.70 × 10,880,254.20
  4. Step 4: Simplify right side
    12,074,647.80x = 197,062,856,159,206.12
  5. Step 5: Solve for x
    x = 197,062,856,159,206.12/12,074,647.80
  6. Step 6: Final answer
    x = 16,320,381.30

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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.