Home / 18,706.18-28,059.26-12,478.35

Finding the Fourth Proportional to 18,706.18, 28,059.26 and 12,478.35

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Solution

The fourth proportional to 18,706.18, 28,059.26 and 12,478.35 is: 18,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.18 : 28,059.26 = 12,478.35 : x
  2. Step 2: Convert to fraction form
    18,706.18/28,059.26 = 12,478.35/x
  3. Step 3: Cross multiply
    18,706.18x = 28,059.26 × 12,478.35
  4. Step 4: Simplify right side
    18,706.18x = 350,133,298.22
  5. Step 5: Solve for x
    x = 350,133,298.22/18,706.18
  6. Step 6: Final answer
    x = 18,717.52

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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.