Home / 12,590.43-18,885.65-4,271.29

Finding the Fourth Proportional to 12,590.43, 18,885.65 and 4,271.29

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Solution

The fourth proportional to 12,590.43, 18,885.65 and 4,271.29 is: 6,406.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.43 : 18,885.65 = 4,271.29 : x
  2. Step 2: Convert to fraction form
    12,590.43/18,885.65 = 4,271.29/x
  3. Step 3: Cross multiply
    12,590.43x = 18,885.65 × 4,271.29
  4. Step 4: Simplify right side
    12,590.43x = 80,666,087.99
  5. Step 5: Solve for x
    x = 80,666,087.99/12,590.43
  6. Step 6: Final answer
    x = 6,406.94

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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.