Home / 13,867.98-19,137.78-7,580.40

Finding the Fourth Proportional to 13,867.98, 19,137.78 and 7,580.40

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Solution

The fourth proportional to 13,867.98, 19,137.78 and 7,580.40 is: 10,460.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.98 : 19,137.78 = 7,580.40 : x
  2. Step 2: Convert to fraction form
    13,867.98/19,137.78 = 7,580.40/x
  3. Step 3: Cross multiply
    13,867.98x = 19,137.78 × 7,580.40
  4. Step 4: Simplify right side
    13,867.98x = 145,072,027.51
  5. Step 5: Solve for x
    x = 145,072,027.51/13,867.98
  6. Step 6: Final answer
    x = 10,460.93

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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.