Home / 13,112.21-19,640.57-10,602.63

Finding the Fourth Proportional to 13,112.21, 19,640.57 and 10,602.63

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Solution

The fourth proportional to 13,112.21, 19,640.57 and 10,602.63 is: 15,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.21 : 19,640.57 = 10,602.63 : x
  2. Step 2: Convert to fraction form
    13,112.21/19,640.57 = 10,602.63/x
  3. Step 3: Cross multiply
    13,112.21x = 19,640.57 × 10,602.63
  4. Step 4: Simplify right side
    13,112.21x = 208,241,643.69
  5. Step 5: Solve for x
    x = 208,241,643.69/13,112.21
  6. Step 6: Final answer
    x = 15,881.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.