Home / 13,915.21-19,203.23-7,864.23

Finding the Fourth Proportional to 13,915.21, 19,203.23 and 7,864.23

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Solution

The fourth proportional to 13,915.21, 19,203.23 and 7,864.23 is: 10,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.21 : 19,203.23 = 7,864.23 : x
  2. Step 2: Convert to fraction form
    13,915.21/19,203.23 = 7,864.23/x
  3. Step 3: Cross multiply
    13,915.21x = 19,203.23 × 7,864.23
  4. Step 4: Simplify right side
    13,915.21x = 151,018,590.64
  5. Step 5: Solve for x
    x = 151,018,590.64/13,915.21
  6. Step 6: Final answer
    x = 10,852.77

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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.