Home / 13,389.83-18,476.94-7,421.37

Finding the Fourth Proportional to 13,389.83, 18,476.94 and 7,421.37

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Solution

The fourth proportional to 13,389.83, 18,476.94 and 7,421.37 is: 10,240.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.83 : 18,476.94 = 7,421.37 : x
  2. Step 2: Convert to fraction form
    13,389.83/18,476.94 = 7,421.37/x
  3. Step 3: Cross multiply
    13,389.83x = 18,476.94 × 7,421.37
  4. Step 4: Simplify right side
    13,389.83x = 137,124,208.21
  5. Step 5: Solve for x
    x = 137,124,208.21/13,389.83
  6. Step 6: Final answer
    x = 10,240.93

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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.