Home / 19,688.47-27,165.27-12,624.46

Finding the Fourth Proportional to 19,688.47, 27,165.27 and 12,624.46

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Solution

The fourth proportional to 19,688.47, 27,165.27 and 12,624.46 is: 17,418.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.47 : 27,165.27 = 12,624.46 : x
  2. Step 2: Convert to fraction form
    19,688.47/27,165.27 = 12,624.46/x
  3. Step 3: Cross multiply
    19,688.47x = 27,165.27 × 12,624.46
  4. Step 4: Simplify right side
    19,688.47x = 342,946,843.93
  5. Step 5: Solve for x
    x = 342,946,843.93/19,688.47
  6. Step 6: Final answer
    x = 17,418.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.