Home / 13,865.28-19,133.92-7,897.30

Finding the Fourth Proportional to 13,865.28, 19,133.92 and 7,897.30

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Solution

The fourth proportional to 13,865.28, 19,133.92 and 7,897.30 is: 10,898.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.28 : 19,133.92 = 7,897.30 : x
  2. Step 2: Convert to fraction form
    13,865.28/19,133.92 = 7,897.30/x
  3. Step 3: Cross multiply
    13,865.28x = 19,133.92 × 7,897.30
  4. Step 4: Simplify right side
    13,865.28x = 151,106,268.45
  5. Step 5: Solve for x
    x = 151,106,268.45/13,865.28
  6. Step 6: Final answer
    x = 10,898.18

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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.