Home / 28,916.19-39,903.03-16,989.75

Finding the Fourth Proportional to 28,916.19, 39,903.03 and 16,989.75

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Solution

The fourth proportional to 28,916.19, 39,903.03 and 16,989.75 is: 23,445.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.19 : 39,903.03 = 16,989.75 : x
  2. Step 2: Convert to fraction form
    28,916.19/39,903.03 = 16,989.75/x
  3. Step 3: Cross multiply
    28,916.19x = 39,903.03 × 16,989.75
  4. Step 4: Simplify right side
    28,916.19x = 677,942,503.94
  5. Step 5: Solve for x
    x = 677,942,503.94/28,916.19
  6. Step 6: Final answer
    x = 23,445.08

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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.