Home / 13,880.16-19,150.83-7,909.65

Finding the Fourth Proportional to 13,880.16, 19,150.83 and 7,909.65

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Solution

The fourth proportional to 13,880.16, 19,150.83 and 7,909.65 is: 10,913.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.16 : 19,150.83 = 7,909.65 : x
  2. Step 2: Convert to fraction form
    13,880.16/19,150.83 = 7,909.65/x
  3. Step 3: Cross multiply
    13,880.16x = 19,150.83 × 7,909.65
  4. Step 4: Simplify right side
    13,880.16x = 151,476,362.51
  5. Step 5: Solve for x
    x = 151,476,362.51/13,880.16
  6. Step 6: Final answer
    x = 10,913.16

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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.