Home / 13,865.94-19,140.21-9,412.74

Finding the Fourth Proportional to 13,865.94, 19,140.21 and 9,412.74

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Solution

The fourth proportional to 13,865.94, 19,140.21 and 9,412.74 is: 12,993.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.94 : 19,140.21 = 9,412.74 : x
  2. Step 2: Convert to fraction form
    13,865.94/19,140.21 = 9,412.74/x
  3. Step 3: Cross multiply
    13,865.94x = 19,140.21 × 9,412.74
  4. Step 4: Simplify right side
    13,865.94x = 180,161,820.28
  5. Step 5: Solve for x
    x = 180,161,820.28/13,865.94
  6. Step 6: Final answer
    x = 12,993.12

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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.