Home / 12,389.40-18,577.95-4,491.60

Finding the Fourth Proportional to 12,389.40, 18,577.95 and 4,491.60

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Solution

The fourth proportional to 12,389.40, 18,577.95 and 4,491.60 is: 6,735.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.40 : 18,577.95 = 4,491.60 : x
  2. Step 2: Convert to fraction form
    12,389.40/18,577.95 = 4,491.60/x
  3. Step 3: Cross multiply
    12,389.40x = 18,577.95 × 4,491.60
  4. Step 4: Simplify right side
    12,389.40x = 83,444,720.22
  5. Step 5: Solve for x
    x = 83,444,720.22/12,389.40
  6. Step 6: Final answer
    x = 6,735.17

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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.