Home / 28,660.95-39,554.60-15,916.59

Finding the Fourth Proportional to 28,660.95, 39,554.60 and 15,916.59

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Solution

The fourth proportional to 28,660.95, 39,554.60 and 15,916.59 is: 21,966.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.95 : 39,554.60 = 15,916.59 : x
  2. Step 2: Convert to fraction form
    28,660.95/39,554.60 = 15,916.59/x
  3. Step 3: Cross multiply
    28,660.95x = 39,554.60 × 15,916.59
  4. Step 4: Simplify right side
    28,660.95x = 629,574,271.23
  5. Step 5: Solve for x
    x = 629,574,271.23/28,660.95
  6. Step 6: Final answer
    x = 21,966.27

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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.