Home / 15,534.99-21,438.34-8,461.40

Finding the Fourth Proportional to 15,534.99, 21,438.34 and 8,461.40

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Solution

The fourth proportional to 15,534.99, 21,438.34 and 8,461.40 is: 11,676.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.99 : 21,438.34 = 8,461.40 : x
  2. Step 2: Convert to fraction form
    15,534.99/21,438.34 = 8,461.40/x
  3. Step 3: Cross multiply
    15,534.99x = 21,438.34 × 8,461.40
  4. Step 4: Simplify right side
    15,534.99x = 181,398,241.73
  5. Step 5: Solve for x
    x = 181,398,241.73/15,534.99
  6. Step 6: Final answer
    x = 11,676.75

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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.