Home / 13,683.08-18,880.96-7,631.90

Finding the Fourth Proportional to 13,683.08, 18,880.96 and 7,631.90

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Solution

The fourth proportional to 13,683.08, 18,880.96 and 7,631.90 is: 10,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,683.08 : 18,880.96 = 7,631.90 : x
  2. Step 2: Convert to fraction form
    13,683.08/18,880.96 = 7,631.90/x
  3. Step 3: Cross multiply
    13,683.08x = 18,880.96 × 7,631.90
  4. Step 4: Simplify right side
    13,683.08x = 144,097,598.62
  5. Step 5: Solve for x
    x = 144,097,598.62/13,683.08
  6. Step 6: Final answer
    x = 10,531.08

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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.