Home / 13,879.49-19,155.95-10,318.10

Finding the Fourth Proportional to 13,879.49, 19,155.95 and 10,318.10

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Solution

The fourth proportional to 13,879.49, 19,155.95 and 10,318.10 is: 14,240.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.49 : 19,155.95 = 10,318.10 : x
  2. Step 2: Convert to fraction form
    13,879.49/19,155.95 = 10,318.10/x
  3. Step 3: Cross multiply
    13,879.49x = 19,155.95 × 10,318.10
  4. Step 4: Simplify right side
    13,879.49x = 197,652,860.32
  5. Step 5: Solve for x
    x = 197,652,860.32/13,879.49
  6. Step 6: Final answer
    x = 14,240.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.