Home / 28,359.63-42,541.80-8,638.35

Finding the Fourth Proportional to 28,359.63, 42,541.80 and 8,638.35

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Solution

The fourth proportional to 28,359.63, 42,541.80 and 8,638.35 is: 12,958.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.63 : 42,541.80 = 8,638.35 : x
  2. Step 2: Convert to fraction form
    28,359.63/42,541.80 = 8,638.35/x
  3. Step 3: Cross multiply
    28,359.63x = 42,541.80 × 8,638.35
  4. Step 4: Simplify right side
    28,359.63x = 367,490,958.03
  5. Step 5: Solve for x
    x = 367,490,958.03/28,359.63
  6. Step 6: Final answer
    x = 12,958.24

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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.