Home / 13,173.71-19,666.67-12,712.41

Finding the Fourth Proportional to 13,173.71, 19,666.67 and 12,712.41

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Solution

The fourth proportional to 13,173.71, 19,666.67 and 12,712.41 is: 18,978.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.71 : 19,666.67 = 12,712.41 : x
  2. Step 2: Convert to fraction form
    13,173.71/19,666.67 = 12,712.41/x
  3. Step 3: Cross multiply
    13,173.71x = 19,666.67 × 12,712.41
  4. Step 4: Simplify right side
    13,173.71x = 250,010,708.81
  5. Step 5: Solve for x
    x = 250,010,708.81/13,173.71
  6. Step 6: Final answer
    x = 18,978.01

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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.