Home / 12,438.88-18,657.69-4,647.10

Finding the Fourth Proportional to 12,438.88, 18,657.69 and 4,647.10

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Solution

The fourth proportional to 12,438.88, 18,657.69 and 4,647.10 is: 6,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.88 : 18,657.69 = 4,647.10 : x
  2. Step 2: Convert to fraction form
    12,438.88/18,657.69 = 4,647.10/x
  3. Step 3: Cross multiply
    12,438.88x = 18,657.69 × 4,647.10
  4. Step 4: Simplify right side
    12,438.88x = 86,704,151.20
  5. Step 5: Solve for x
    x = 86,704,151.20/12,438.88
  6. Step 6: Final answer
    x = 6,970.41

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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.