Home / 13,868.60-19,138.64-7,580.97

Finding the Fourth Proportional to 13,868.60, 19,138.64 and 7,580.97

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Solution

The fourth proportional to 13,868.60, 19,138.64 and 7,580.97 is: 10,461.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.60 : 19,138.64 = 7,580.97 : x
  2. Step 2: Convert to fraction form
    13,868.60/19,138.64 = 7,580.97/x
  3. Step 3: Cross multiply
    13,868.60x = 19,138.64 × 7,580.97
  4. Step 4: Simplify right side
    13,868.60x = 145,089,417.78
  5. Step 5: Solve for x
    x = 145,089,417.78/13,868.60
  6. Step 6: Final answer
    x = 10,461.72

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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.