Home / 13,160.77-19,647.47-12,699.46

Finding the Fourth Proportional to 13,160.77, 19,647.47 and 12,699.46

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Solution

The fourth proportional to 13,160.77, 19,647.47 and 12,699.46 is: 18,958.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.77 : 19,647.47 = 12,699.46 : x
  2. Step 2: Convert to fraction form
    13,160.77/19,647.47 = 12,699.46/x
  3. Step 3: Cross multiply
    13,160.77x = 19,647.47 × 12,699.46
  4. Step 4: Simplify right side
    13,160.77x = 249,512,259.37
  5. Step 5: Solve for x
    x = 249,512,259.37/13,160.77
  6. Step 6: Final answer
    x = 18,958.79

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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.