Home / 19,683.07-29,515.72-5,639.88

Finding the Fourth Proportional to 19,683.07, 29,515.72 and 5,639.88

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Solution

The fourth proportional to 19,683.07, 29,515.72 and 5,639.88 is: 8,457.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,683.07 : 29,515.72 = 5,639.88 : x
  2. Step 2: Convert to fraction form
    19,683.07/29,515.72 = 5,639.88/x
  3. Step 3: Cross multiply
    19,683.07x = 29,515.72 × 5,639.88
  4. Step 4: Simplify right side
    19,683.07x = 166,465,236.65
  5. Step 5: Solve for x
    x = 166,465,236.65/19,683.07
  6. Step 6: Final answer
    x = 8,457.28

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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.