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Finding the Fourth Proportional to 12,643.19, 17,445.93 and 7,608.63

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Solution

The fourth proportional to 12,643.19, 17,445.93 and 7,608.63 is: 10,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.19 : 17,445.93 = 7,608.63 : x
  2. Step 2: Convert to fraction form
    12,643.19/17,445.93 = 7,608.63/x
  3. Step 3: Cross multiply
    12,643.19x = 17,445.93 × 7,608.63
  4. Step 4: Simplify right side
    12,643.19x = 132,739,706.06
  5. Step 5: Solve for x
    x = 132,739,706.06/12,643.19
  6. Step 6: Final answer
    x = 10,498.91

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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.