Home / 13,353.76-18,428.50-7,385.54

Finding the Fourth Proportional to 13,353.76, 18,428.50 and 7,385.54

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Solution

The fourth proportional to 13,353.76, 18,428.50 and 7,385.54 is: 10,192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.76 : 18,428.50 = 7,385.54 : x
  2. Step 2: Convert to fraction form
    13,353.76/18,428.50 = 7,385.54/x
  3. Step 3: Cross multiply
    13,353.76x = 18,428.50 × 7,385.54
  4. Step 4: Simplify right side
    13,353.76x = 136,104,423.89
  5. Step 5: Solve for x
    x = 136,104,423.89/13,353.76
  6. Step 6: Final answer
    x = 10,192.22

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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.