Home / 12,903.49-19,363.88-5,509.68

Finding the Fourth Proportional to 12,903.49, 19,363.88 and 5,509.68

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Solution

The fourth proportional to 12,903.49, 19,363.88 and 5,509.68 is: 8,268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.49 : 19,363.88 = 5,509.68 : x
  2. Step 2: Convert to fraction form
    12,903.49/19,363.88 = 5,509.68/x
  3. Step 3: Cross multiply
    12,903.49x = 19,363.88 × 5,509.68
  4. Step 4: Simplify right side
    12,903.49x = 106,688,782.36
  5. Step 5: Solve for x
    x = 106,688,782.36/12,903.49
  6. Step 6: Final answer
    x = 8,268.21

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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.