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Finding the Fourth Proportional to 11,690.51, 17,427.51 and 11,510.69

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Solution

The fourth proportional to 11,690.51, 17,427.51 and 11,510.69 is: 17,159.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.51 : 17,427.51 = 11,510.69 : x
  2. Step 2: Convert to fraction form
    11,690.51/17,427.51 = 11,510.69/x
  3. Step 3: Cross multiply
    11,690.51x = 17,427.51 × 11,510.69
  4. Step 4: Simplify right side
    11,690.51x = 200,602,577.94
  5. Step 5: Solve for x
    x = 200,602,577.94/11,690.51
  6. Step 6: Final answer
    x = 17,159.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.