Home / 13,688.16-20,532.24-4,922.88

Finding the Fourth Proportional to 13,688.16, 20,532.24 and 4,922.88

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Solution

The fourth proportional to 13,688.16, 20,532.24 and 4,922.88 is: 7,384.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.16 : 20,532.24 = 4,922.88 : x
  2. Step 2: Convert to fraction form
    13,688.16/20,532.24 = 4,922.88/x
  3. Step 3: Cross multiply
    13,688.16x = 20,532.24 × 4,922.88
  4. Step 4: Simplify right side
    13,688.16x = 101,077,753.65
  5. Step 5: Solve for x
    x = 101,077,753.65/13,688.16
  6. Step 6: Final answer
    x = 7,384.32

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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.