Home / 15,558.80-23,279.88-8,638.16

Finding the Fourth Proportional to 15,558.80, 23,279.88 and 8,638.16

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Solution

The fourth proportional to 15,558.80, 23,279.88 and 8,638.16 is: 12,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,558.80 : 23,279.88 = 8,638.16 : x
  2. Step 2: Convert to fraction form
    15,558.80/23,279.88 = 8,638.16/x
  3. Step 3: Cross multiply
    15,558.80x = 23,279.88 × 8,638.16
  4. Step 4: Simplify right side
    15,558.80x = 201,095,328.22
  5. Step 5: Solve for x
    x = 201,095,328.22/15,558.80
  6. Step 6: Final answer
    x = 12,924.86

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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.