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Finding the Fourth Proportional to 13,656.70, 19,145.30 and 13,656.70

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Solution

The fourth proportional to 13,656.70, 19,145.30 and 13,656.70 is: 19,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.70 : 19,145.30 = 13,656.70 : x
  2. Step 2: Convert to fraction form
    13,656.70/19,145.30 = 13,656.70/x
  3. Step 3: Cross multiply
    13,656.70x = 19,145.30 × 13,656.70
  4. Step 4: Simplify right side
    13,656.70x = 261,461,618.51
  5. Step 5: Solve for x
    x = 261,461,618.51/13,656.70
  6. Step 6: Final answer
    x = 19,145.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.