Home / 13,881.79-19,157.91-7,913.60

Finding the Fourth Proportional to 13,881.79, 19,157.91 and 7,913.60

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Solution

The fourth proportional to 13,881.79, 19,157.91 and 7,913.60 is: 10,921.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.79 : 19,157.91 = 7,913.60 : x
  2. Step 2: Convert to fraction form
    13,881.79/19,157.91 = 7,913.60/x
  3. Step 3: Cross multiply
    13,881.79x = 19,157.91 × 7,913.60
  4. Step 4: Simplify right side
    13,881.79x = 151,608,036.58
  5. Step 5: Solve for x
    x = 151,608,036.58/13,881.79
  6. Step 6: Final answer
    x = 10,921.36

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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.