Home / 13,880.59-19,152.32-7,911.11

Finding the Fourth Proportional to 13,880.59, 19,152.32 and 7,911.11

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Solution

The fourth proportional to 13,880.59, 19,152.32 and 7,911.11 is: 10,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.59 : 19,152.32 = 7,911.11 : x
  2. Step 2: Convert to fraction form
    13,880.59/19,152.32 = 7,911.11/x
  3. Step 3: Cross multiply
    13,880.59x = 19,152.32 × 7,911.11
  4. Step 4: Simplify right side
    13,880.59x = 151,516,110.28
  5. Step 5: Solve for x
    x = 151,516,110.28/13,880.59
  6. Step 6: Final answer
    x = 10,915.68

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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.