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Finding the Fourth Proportional to 13,483.64, 18,606.91 and 7,515.02

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Solution

The fourth proportional to 13,483.64, 18,606.91 and 7,515.02 is: 10,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.64 : 18,606.91 = 7,515.02 : x
  2. Step 2: Convert to fraction form
    13,483.64/18,606.91 = 7,515.02/x
  3. Step 3: Cross multiply
    13,483.64x = 18,606.91 × 7,515.02
  4. Step 4: Simplify right side
    13,483.64x = 139,831,300.79
  5. Step 5: Solve for x
    x = 139,831,300.79/13,483.64
  6. Step 6: Final answer
    x = 10,370.44

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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.