Home / 13,353.40-18,426.86-7,384.68

Finding the Fourth Proportional to 13,353.40, 18,426.86 and 7,384.68

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Solution

The fourth proportional to 13,353.40, 18,426.86 and 7,384.68 is: 10,190.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.40 : 18,426.86 = 7,384.68 : x
  2. Step 2: Convert to fraction form
    13,353.40/18,426.86 = 7,384.68/x
  3. Step 3: Cross multiply
    13,353.40x = 18,426.86 × 7,384.68
  4. Step 4: Simplify right side
    13,353.40x = 136,076,464.50
  5. Step 5: Solve for x
    x = 136,076,464.50/13,353.40
  6. Step 6: Final answer
    x = 10,190.40

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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.