Home / 13,353.63-18,427.70-7,385.34

Finding the Fourth Proportional to 13,353.63, 18,427.70 and 7,385.34

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Solution

The fourth proportional to 13,353.63, 18,427.70 and 7,385.34 is: 10,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.63 : 18,427.70 = 7,385.34 : x
  2. Step 2: Convert to fraction form
    13,353.63/18,427.70 = 7,385.34/x
  3. Step 3: Cross multiply
    13,353.63x = 18,427.70 × 7,385.34
  4. Step 4: Simplify right side
    13,353.63x = 136,094,829.92
  5. Step 5: Solve for x
    x = 136,094,829.92/13,353.63
  6. Step 6: Final answer
    x = 10,191.60

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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.