Home / 13,881.58-19,154.31-7,913.36

Finding the Fourth Proportional to 13,881.58, 19,154.31 and 7,913.36

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Solution

The fourth proportional to 13,881.58, 19,154.31 and 7,913.36 is: 10,919.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.58 : 19,154.31 = 7,913.36 : x
  2. Step 2: Convert to fraction form
    13,881.58/19,154.31 = 7,913.36/x
  3. Step 3: Cross multiply
    13,881.58x = 19,154.31 × 7,913.36
  4. Step 4: Simplify right side
    13,881.58x = 151,574,950.58
  5. Step 5: Solve for x
    x = 151,574,950.58/13,881.58
  6. Step 6: Final answer
    x = 10,919.14

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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.