Home / 28,091.34-38,782.14-20,960.40

Finding the Fourth Proportional to 28,091.34, 38,782.14 and 20,960.40

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Solution

The fourth proportional to 28,091.34, 38,782.14 and 20,960.40 is: 28,937.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.34 : 38,782.14 = 20,960.40 : x
  2. Step 2: Convert to fraction form
    28,091.34/38,782.14 = 20,960.40/x
  3. Step 3: Cross multiply
    28,091.34x = 38,782.14 × 20,960.40
  4. Step 4: Simplify right side
    28,091.34x = 812,889,167.26
  5. Step 5: Solve for x
    x = 812,889,167.26/28,091.34
  6. Step 6: Final answer
    x = 28,937.36

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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.