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Finding the Fourth Proportional to 13,994.68, 19,312.68 and 7,707.08

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Solution

The fourth proportional to 13,994.68, 19,312.68 and 7,707.08 is: 10,635.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.68 : 19,312.68 = 7,707.08 : x
  2. Step 2: Convert to fraction form
    13,994.68/19,312.68 = 7,707.08/x
  3. Step 3: Cross multiply
    13,994.68x = 19,312.68 × 7,707.08
  4. Step 4: Simplify right side
    13,994.68x = 148,844,369.77
  5. Step 5: Solve for x
    x = 148,844,369.77/13,994.68
  6. Step 6: Final answer
    x = 10,635.78

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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.