Home / 28,021.16-38,668.74-15,447.08

Finding the Fourth Proportional to 28,021.16, 38,668.74 and 15,447.08

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Solution

The fourth proportional to 28,021.16, 38,668.74 and 15,447.08 is: 21,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.16 : 38,668.74 = 15,447.08 : x
  2. Step 2: Convert to fraction form
    28,021.16/38,668.74 = 15,447.08/x
  3. Step 3: Cross multiply
    28,021.16x = 38,668.74 × 15,447.08
  4. Step 4: Simplify right side
    28,021.16x = 597,319,120.28
  5. Step 5: Solve for x
    x = 597,319,120.28/28,021.16
  6. Step 6: Final answer
    x = 21,316.72

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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.