Home / 13,353.36-18,426.90-7,384.68

Finding the Fourth Proportional to 13,353.36, 18,426.90 and 7,384.68

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Solution

The fourth proportional to 13,353.36, 18,426.90 and 7,384.68 is: 10,190.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.36 : 18,426.90 = 7,384.68 : x
  2. Step 2: Convert to fraction form
    13,353.36/18,426.90 = 7,384.68/x
  3. Step 3: Cross multiply
    13,353.36x = 18,426.90 × 7,384.68
  4. Step 4: Simplify right side
    13,353.36x = 136,076,759.89
  5. Step 5: Solve for x
    x = 136,076,759.89/13,353.36
  6. Step 6: Final answer
    x = 10,190.45

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Half scale
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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.