Home / 13,085.81-19,626.78-4,320.80

Finding the Fourth Proportional to 13,085.81, 19,626.78 and 4,320.80

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Solution

The fourth proportional to 13,085.81, 19,626.78 and 4,320.80 is: 6,480.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.81 : 19,626.78 = 4,320.80 : x
  2. Step 2: Convert to fraction form
    13,085.81/19,626.78 = 4,320.80/x
  3. Step 3: Cross multiply
    13,085.81x = 19,626.78 × 4,320.80
  4. Step 4: Simplify right side
    13,085.81x = 84,803,391.02
  5. Step 5: Solve for x
    x = 84,803,391.02/13,085.81
  6. Step 6: Final answer
    x = 6,480.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.