Home / 20,916.36-28,869.84-14,111.46

Finding the Fourth Proportional to 20,916.36, 28,869.84 and 14,111.46

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Solution

The fourth proportional to 20,916.36, 28,869.84 and 14,111.46 is: 19,477.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.36 : 28,869.84 = 14,111.46 : x
  2. Step 2: Convert to fraction form
    20,916.36/28,869.84 = 14,111.46/x
  3. Step 3: Cross multiply
    20,916.36x = 28,869.84 × 14,111.46
  4. Step 4: Simplify right side
    20,916.36x = 407,395,592.37
  5. Step 5: Solve for x
    x = 407,395,592.37/20,916.36
  6. Step 6: Final answer
    x = 19,477.37

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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.