Home / 13,865.40-19,135.32-7,897.32

Finding the Fourth Proportional to 13,865.40, 19,135.32 and 7,897.32

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Solution

The fourth proportional to 13,865.40, 19,135.32 and 7,897.32 is: 10,898.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.40 : 19,135.32 = 7,897.32 : x
  2. Step 2: Convert to fraction form
    13,865.40/19,135.32 = 7,897.32/x
  3. Step 3: Cross multiply
    13,865.40x = 19,135.32 × 7,897.32
  4. Step 4: Simplify right side
    13,865.40x = 151,117,745.34
  5. Step 5: Solve for x
    x = 151,117,745.34/13,865.40
  6. Step 6: Final answer
    x = 10,898.91

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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.