Home / 13,684.04-20,528.34-8,415.65

Finding the Fourth Proportional to 13,684.04, 20,528.34 and 8,415.65

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Solution

The fourth proportional to 13,684.04, 20,528.34 and 8,415.65 is: 12,624.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.04 : 20,528.34 = 8,415.65 : x
  2. Step 2: Convert to fraction form
    13,684.04/20,528.34 = 8,415.65/x
  3. Step 3: Cross multiply
    13,684.04x = 20,528.34 × 8,415.65
  4. Step 4: Simplify right side
    13,684.04x = 172,759,228.81
  5. Step 5: Solve for x
    x = 172,759,228.81/13,684.04
  6. Step 6: Final answer
    x = 12,624.87

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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.