Home / 12,455.58-18,681.06-3,688.41

Finding the Fourth Proportional to 12,455.58, 18,681.06 and 3,688.41

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Solution

The fourth proportional to 12,455.58, 18,681.06 and 3,688.41 is: 5,531.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.58 : 18,681.06 = 3,688.41 : x
  2. Step 2: Convert to fraction form
    12,455.58/18,681.06 = 3,688.41/x
  3. Step 3: Cross multiply
    12,455.58x = 18,681.06 × 3,688.41
  4. Step 4: Simplify right side
    12,455.58x = 68,903,408.51
  5. Step 5: Solve for x
    x = 68,903,408.51/12,455.58
  6. Step 6: Final answer
    x = 5,531.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.