Home / 14,081.85-19,430.51-8,418.87

Finding the Fourth Proportional to 14,081.85, 19,430.51 and 8,418.87

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Solution

The fourth proportional to 14,081.85, 19,430.51 and 8,418.87 is: 11,616.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,081.85 : 19,430.51 = 8,418.87 : x
  2. Step 2: Convert to fraction form
    14,081.85/19,430.51 = 8,418.87/x
  3. Step 3: Cross multiply
    14,081.85x = 19,430.51 × 8,418.87
  4. Step 4: Simplify right side
    14,081.85x = 163,582,895.63
  5. Step 5: Solve for x
    x = 163,582,895.63/14,081.85
  6. Step 6: Final answer
    x = 11,616.58

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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.