Home / 13,153.50-18,152.46-7,185.60

Finding the Fourth Proportional to 13,153.50, 18,152.46 and 7,185.60

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Solution

The fourth proportional to 13,153.50, 18,152.46 and 7,185.60 is: 9,916.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.50 : 18,152.46 = 7,185.60 : x
  2. Step 2: Convert to fraction form
    13,153.50/18,152.46 = 7,185.60/x
  3. Step 3: Cross multiply
    13,153.50x = 18,152.46 × 7,185.60
  4. Step 4: Simplify right side
    13,153.50x = 130,436,316.58
  5. Step 5: Solve for x
    x = 130,436,316.58/13,153.50
  6. Step 6: Final answer
    x = 9,916.47

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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.