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Finding the Fourth Proportional to 28,700.96, 43,059.95 and 13,719.29

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Solution

The fourth proportional to 28,700.96, 43,059.95 and 13,719.29 is: 20,583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.96 : 43,059.95 = 13,719.29 : x
  2. Step 2: Convert to fraction form
    28,700.96/43,059.95 = 13,719.29/x
  3. Step 3: Cross multiply
    28,700.96x = 43,059.95 × 13,719.29
  4. Step 4: Simplify right side
    28,700.96x = 590,751,941.44
  5. Step 5: Solve for x
    x = 590,751,941.44/28,700.96
  6. Step 6: Final answer
    x = 20,583.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.