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Finding the Fourth Proportional to 14,483.63, 19,987.40 and 7,859.63

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Solution

The fourth proportional to 14,483.63, 19,987.40 and 7,859.63 is: 10,846.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,483.63 : 19,987.40 = 7,859.63 : x
  2. Step 2: Convert to fraction form
    14,483.63/19,987.40 = 7,859.63/x
  3. Step 3: Cross multiply
    14,483.63x = 19,987.40 × 7,859.63
  4. Step 4: Simplify right side
    14,483.63x = 157,093,568.66
  5. Step 5: Solve for x
    x = 157,093,568.66/14,483.63
  6. Step 6: Final answer
    x = 10,846.28

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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.