Home / 13,297.21-18,349.86-7,328.72

Finding the Fourth Proportional to 13,297.21, 18,349.86 and 7,328.72

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Solution

The fourth proportional to 13,297.21, 18,349.86 and 7,328.72 is: 10,113.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.21 : 18,349.86 = 7,328.72 : x
  2. Step 2: Convert to fraction form
    13,297.21/18,349.86 = 7,328.72/x
  3. Step 3: Cross multiply
    13,297.21x = 18,349.86 × 7,328.72
  4. Step 4: Simplify right side
    13,297.21x = 134,480,985.98
  5. Step 5: Solve for x
    x = 134,480,985.98/13,297.21
  6. Step 6: Final answer
    x = 10,113.47

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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.