Home / 13,214.64-18,237.66-8,438.99

Finding the Fourth Proportional to 13,214.64, 18,237.66 and 8,438.99

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Solution

The fourth proportional to 13,214.64, 18,237.66 and 8,438.99 is: 11,646.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214.64 : 18,237.66 = 8,438.99 : x
  2. Step 2: Convert to fraction form
    13,214.64/18,237.66 = 8,438.99/x
  3. Step 3: Cross multiply
    13,214.64x = 18,237.66 × 8,438.99
  4. Step 4: Simplify right side
    13,214.64x = 153,907,307.53
  5. Step 5: Solve for x
    x = 153,907,307.53/13,214.64
  6. Step 6: Final answer
    x = 11,646.72

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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.