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Finding the Fourth Proportional to 14,128.68, 19,497.93 and 7,755.91

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Solution

The fourth proportional to 14,128.68, 19,497.93 and 7,755.91 is: 10,703.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.68 : 19,497.93 = 7,755.91 : x
  2. Step 2: Convert to fraction form
    14,128.68/19,497.93 = 7,755.91/x
  3. Step 3: Cross multiply
    14,128.68x = 19,497.93 × 7,755.91
  4. Step 4: Simplify right side
    14,128.68x = 151,224,156.06
  5. Step 5: Solve for x
    x = 151,224,156.06/14,128.68
  6. Step 6: Final answer
    x = 10,703.34

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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.