Home / 13,929.93-19,223.01-7,880.06

Finding the Fourth Proportional to 13,929.93, 19,223.01 and 7,880.06

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Solution

The fourth proportional to 13,929.93, 19,223.01 and 7,880.06 is: 10,874.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.93 : 19,223.01 = 7,880.06 : x
  2. Step 2: Convert to fraction form
    13,929.93/19,223.01 = 7,880.06/x
  3. Step 3: Cross multiply
    13,929.93x = 19,223.01 × 7,880.06
  4. Step 4: Simplify right side
    13,929.93x = 151,478,520.24
  5. Step 5: Solve for x
    x = 151,478,520.24/13,929.93
  6. Step 6: Final answer
    x = 10,874.32

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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.