Home / 13,890.33-19,167.45-7,840.23

Finding the Fourth Proportional to 13,890.33, 19,167.45 and 7,840.23

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Solution

The fourth proportional to 13,890.33, 19,167.45 and 7,840.23 is: 10,818.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.33 : 19,167.45 = 7,840.23 : x
  2. Step 2: Convert to fraction form
    13,890.33/19,167.45 = 7,840.23/x
  3. Step 3: Cross multiply
    13,890.33x = 19,167.45 × 7,840.23
  4. Step 4: Simplify right side
    13,890.33x = 150,277,216.51
  5. Step 5: Solve for x
    x = 150,277,216.51/13,890.33
  6. Step 6: Final answer
    x = 10,818.84

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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.