Home / 15,504.49-21,396.47-8,430.96

Finding the Fourth Proportional to 15,504.49, 21,396.47 and 8,430.96

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Solution

The fourth proportional to 15,504.49, 21,396.47 and 8,430.96 is: 11,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,504.49 : 21,396.47 = 8,430.96 : x
  2. Step 2: Convert to fraction form
    15,504.49/21,396.47 = 8,430.96/x
  3. Step 3: Cross multiply
    15,504.49x = 21,396.47 × 8,430.96
  4. Step 4: Simplify right side
    15,504.49x = 180,392,782.71
  5. Step 5: Solve for x
    x = 180,392,782.71/15,504.49
  6. Step 6: Final answer
    x = 11,634.87

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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.