Home / 15,128.03-20,873.68-9,160.25

Finding the Fourth Proportional to 15,128.03, 20,873.68 and 9,160.25

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Solution

The fourth proportional to 15,128.03, 20,873.68 and 9,160.25 is: 12,639.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.03 : 20,873.68 = 9,160.25 : x
  2. Step 2: Convert to fraction form
    15,128.03/20,873.68 = 9,160.25/x
  3. Step 3: Cross multiply
    15,128.03x = 20,873.68 × 9,160.25
  4. Step 4: Simplify right side
    15,128.03x = 191,208,127.22
  5. Step 5: Solve for x
    x = 191,208,127.22/15,128.03
  6. Step 6: Final answer
    x = 12,639.33

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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.