Home / 20,328.19-30,491.37-8,477.08

Finding the Fourth Proportional to 20,328.19, 30,491.37 and 8,477.08

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Solution

The fourth proportional to 20,328.19, 30,491.37 and 8,477.08 is: 12,715.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.19 : 30,491.37 = 8,477.08 : x
  2. Step 2: Convert to fraction form
    20,328.19/30,491.37 = 8,477.08/x
  3. Step 3: Cross multiply
    20,328.19x = 30,491.37 × 8,477.08
  4. Step 4: Simplify right side
    20,328.19x = 258,477,782.80
  5. Step 5: Solve for x
    x = 258,477,782.80/20,328.19
  6. Step 6: Final answer
    x = 12,715.24

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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.