Home / 29,290.63-40,421.06-15,861.89

Finding the Fourth Proportional to 29,290.63, 40,421.06 and 15,861.89

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Solution

The fourth proportional to 29,290.63, 40,421.06 and 15,861.89 is: 21,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,290.63 : 40,421.06 = 15,861.89 : x
  2. Step 2: Convert to fraction form
    29,290.63/40,421.06 = 15,861.89/x
  3. Step 3: Cross multiply
    29,290.63x = 40,421.06 × 15,861.89
  4. Step 4: Simplify right side
    29,290.63x = 641,154,125.99
  5. Step 5: Solve for x
    x = 641,154,125.99/29,290.63
  6. Step 6: Final answer
    x = 21,889.40

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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.