Home / 15,485.10-21,369.34-8,411.46

Finding the Fourth Proportional to 15,485.10, 21,369.34 and 8,411.46

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Solution

The fourth proportional to 15,485.10, 21,369.34 and 8,411.46 is: 11,607.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.10 : 21,369.34 = 8,411.46 : x
  2. Step 2: Convert to fraction form
    15,485.10/21,369.34 = 8,411.46/x
  3. Step 3: Cross multiply
    15,485.10x = 21,369.34 × 8,411.46
  4. Step 4: Simplify right side
    15,485.10x = 179,747,199.73
  5. Step 5: Solve for x
    x = 179,747,199.73/15,485.10
  6. Step 6: Final answer
    x = 11,607.76

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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.