Home / 13,698.40-18,898.72-10,121.98

Finding the Fourth Proportional to 13,698.40, 18,898.72 and 10,121.98

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Solution

The fourth proportional to 13,698.40, 18,898.72 and 10,121.98 is: 13,964.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.40 : 18,898.72 = 10,121.98 : x
  2. Step 2: Convert to fraction form
    13,698.40/18,898.72 = 10,121.98/x
  3. Step 3: Cross multiply
    13,698.40x = 18,898.72 × 10,121.98
  4. Step 4: Simplify right side
    13,698.40x = 191,292,393.31
  5. Step 5: Solve for x
    x = 191,292,393.31/13,698.40
  6. Step 6: Final answer
    x = 13,964.58

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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.