Home / 12,918.87-17,838.54-10,529.19

Finding the Fourth Proportional to 12,918.87, 17,838.54 and 10,529.19

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Solution

The fourth proportional to 12,918.87, 17,838.54 and 10,529.19 is: 14,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.87 : 17,838.54 = 10,529.19 : x
  2. Step 2: Convert to fraction form
    12,918.87/17,838.54 = 10,529.19/x
  3. Step 3: Cross multiply
    12,918.87x = 17,838.54 × 10,529.19
  4. Step 4: Simplify right side
    12,918.87x = 187,825,376.98
  5. Step 5: Solve for x
    x = 187,825,376.98/12,918.87
  6. Step 6: Final answer
    x = 14,538.84

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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.