Home / 15,655.77-21,604.97-8,485.67

Finding the Fourth Proportional to 15,655.77, 21,604.97 and 8,485.67

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Solution

The fourth proportional to 15,655.77, 21,604.97 and 8,485.67 is: 11,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.77 : 21,604.97 = 8,485.67 : x
  2. Step 2: Convert to fraction form
    15,655.77/21,604.97 = 8,485.67/x
  3. Step 3: Cross multiply
    15,655.77x = 21,604.97 × 8,485.67
  4. Step 4: Simplify right side
    15,655.77x = 183,332,721.01
  5. Step 5: Solve for x
    x = 183,332,721.01/15,655.77
  6. Step 6: Final answer
    x = 11,710.23

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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.