Home / 12,880.05-19,321.67-4,558.40

Finding the Fourth Proportional to 12,880.05, 19,321.67 and 4,558.40

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Solution

The fourth proportional to 12,880.05, 19,321.67 and 4,558.40 is: 6,838.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.05 : 19,321.67 = 4,558.40 : x
  2. Step 2: Convert to fraction form
    12,880.05/19,321.67 = 4,558.40/x
  3. Step 3: Cross multiply
    12,880.05x = 19,321.67 × 4,558.40
  4. Step 4: Simplify right side
    12,880.05x = 88,075,887.77
  5. Step 5: Solve for x
    x = 88,075,887.77/12,880.05
  6. Step 6: Final answer
    x = 6,838.17

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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.