Home / 12,485.16-18,622.08-10,828.53

Finding the Fourth Proportional to 12,485.16, 18,622.08 and 10,828.53

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Solution

The fourth proportional to 12,485.16, 18,622.08 and 10,828.53 is: 16,151.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.16 : 18,622.08 = 10,828.53 : x
  2. Step 2: Convert to fraction form
    12,485.16/18,622.08 = 10,828.53/x
  3. Step 3: Cross multiply
    12,485.16x = 18,622.08 × 10,828.53
  4. Step 4: Simplify right side
    12,485.16x = 201,649,751.94
  5. Step 5: Solve for x
    x = 201,649,751.94/12,485.16
  6. Step 6: Final answer
    x = 16,151.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.