Home / 15,153.05-20,910.47-8,779.33

Finding the Fourth Proportional to 15,153.05, 20,910.47 and 8,779.33

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Solution

The fourth proportional to 15,153.05, 20,910.47 and 8,779.33 is: 12,115.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153.05 : 20,910.47 = 8,779.33 : x
  2. Step 2: Convert to fraction form
    15,153.05/20,910.47 = 8,779.33/x
  3. Step 3: Cross multiply
    15,153.05x = 20,910.47 × 8,779.33
  4. Step 4: Simplify right side
    15,153.05x = 183,579,886.26
  5. Step 5: Solve for x
    x = 183,579,886.26/15,153.05
  6. Step 6: Final answer
    x = 12,115.04

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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.