Home / 13,220.70-19,830.47-4,455.58

Finding the Fourth Proportional to 13,220.70, 19,830.47 and 4,455.58

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Solution

The fourth proportional to 13,220.70, 19,830.47 and 4,455.58 is: 6,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.70 : 19,830.47 = 4,455.58 : x
  2. Step 2: Convert to fraction form
    13,220.70/19,830.47 = 4,455.58/x
  3. Step 3: Cross multiply
    13,220.70x = 19,830.47 × 4,455.58
  4. Step 4: Simplify right side
    13,220.70x = 88,356,146.37
  5. Step 5: Solve for x
    x = 88,356,146.37/13,220.70
  6. Step 6: Final answer
    x = 6,683.17

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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.