Home / 15,057.91-20,782.52-8,683.35

Finding the Fourth Proportional to 15,057.91, 20,782.52 and 8,683.35

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Solution

The fourth proportional to 15,057.91, 20,782.52 and 8,683.35 is: 11,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,057.91 : 20,782.52 = 8,683.35 : x
  2. Step 2: Convert to fraction form
    15,057.91/20,782.52 = 8,683.35/x
  3. Step 3: Cross multiply
    15,057.91x = 20,782.52 × 8,683.35
  4. Step 4: Simplify right side
    15,057.91x = 180,461,895.04
  5. Step 5: Solve for x
    x = 180,461,895.04/15,057.91
  6. Step 6: Final answer
    x = 11,984.52

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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.