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Finding the Fourth Proportional to 18,554,679.60, 27,832,019.40 and 10,977,745.20

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Solution

The fourth proportional to 18,554,679.60, 27,832,019.40 and 10,977,745.20 is: 16,466,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,554,679.60 : 27,832,019.40 = 10,977,745.20 : x
  2. Step 2: Convert to fraction form
    18,554,679.60/27,832,019.40 = 10,977,745.20/x
  3. Step 3: Cross multiply
    18,554,679.60x = 27,832,019.40 × 10,977,745.20
  4. Step 4: Simplify right side
    18,554,679.60x = 305,532,817,374,656.81
  5. Step 5: Solve for x
    x = 305,532,817,374,656.81/18,554,679.60
  6. Step 6: Final answer
    x = 16,466,617.80

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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.