Home / 15,485.61-21,370.13-8,411.99

Finding the Fourth Proportional to 15,485.61, 21,370.13 and 8,411.99

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Solution

The fourth proportional to 15,485.61, 21,370.13 and 8,411.99 is: 11,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.61 : 21,370.13 = 8,411.99 : x
  2. Step 2: Convert to fraction form
    15,485.61/21,370.13 = 8,411.99/x
  3. Step 3: Cross multiply
    15,485.61x = 21,370.13 × 8,411.99
  4. Step 4: Simplify right side
    15,485.61x = 179,765,202.49
  5. Step 5: Solve for x
    x = 179,765,202.49/15,485.61
  6. Step 6: Final answer
    x = 11,608.53

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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.