Home / 13,890.79-20,838.34-4,528.63

Finding the Fourth Proportional to 13,890.79, 20,838.34 and 4,528.63

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Solution

The fourth proportional to 13,890.79, 20,838.34 and 4,528.63 is: 6,793.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.79 : 20,838.34 = 4,528.63 : x
  2. Step 2: Convert to fraction form
    13,890.79/20,838.34 = 4,528.63/x
  3. Step 3: Cross multiply
    13,890.79x = 20,838.34 × 4,528.63
  4. Step 4: Simplify right side
    13,890.79x = 94,369,163.38
  5. Step 5: Solve for x
    x = 94,369,163.38/13,890.79
  6. Step 6: Final answer
    x = 6,793.65

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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.