Home / 15,806.85-23,705.19-8,790.21

Finding the Fourth Proportional to 15,806.85, 23,705.19 and 8,790.21

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Solution

The fourth proportional to 15,806.85, 23,705.19 and 8,790.21 is: 13,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.85 : 23,705.19 = 8,790.21 : x
  2. Step 2: Convert to fraction form
    15,806.85/23,705.19 = 8,790.21/x
  3. Step 3: Cross multiply
    15,806.85x = 23,705.19 × 8,790.21
  4. Step 4: Simplify right side
    15,806.85x = 208,373,598.19
  5. Step 5: Solve for x
    x = 208,373,598.19/15,806.85
  6. Step 6: Final answer
    x = 13,182.49

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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.