Home / 13,878.37-19,158.33-10,690.51

Finding the Fourth Proportional to 13,878.37, 19,158.33 and 10,690.51

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Solution

The fourth proportional to 13,878.37, 19,158.33 and 10,690.51 is: 14,757.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.37 : 19,158.33 = 10,690.51 : x
  2. Step 2: Convert to fraction form
    13,878.37/19,158.33 = 10,690.51/x
  3. Step 3: Cross multiply
    13,878.37x = 19,158.33 × 10,690.51
  4. Step 4: Simplify right side
    13,878.37x = 204,812,318.45
  5. Step 5: Solve for x
    x = 204,812,318.45/13,878.37
  6. Step 6: Final answer
    x = 14,757.66

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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.