Home / 15,301.20-21,128.94-14,513.88

Finding the Fourth Proportional to 15,301.20, 21,128.94 and 14,513.88

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Solution

The fourth proportional to 15,301.20, 21,128.94 and 14,513.88 is: 20,041.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.20 : 21,128.94 = 14,513.88 : x
  2. Step 2: Convert to fraction form
    15,301.20/21,128.94 = 14,513.88/x
  3. Step 3: Cross multiply
    15,301.20x = 21,128.94 × 14,513.88
  4. Step 4: Simplify right side
    15,301.20x = 306,662,899.69
  5. Step 5: Solve for x
    x = 306,662,899.69/15,301.20
  6. Step 6: Final answer
    x = 20,041.75

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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.