Home / 15,539.99-21,445.20-8,466.43

Finding the Fourth Proportional to 15,539.99, 21,445.20 and 8,466.43

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Solution

The fourth proportional to 15,539.99, 21,445.20 and 8,466.43 is: 11,683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,539.99 : 21,445.20 = 8,466.43 : x
  2. Step 2: Convert to fraction form
    15,539.99/21,445.20 = 8,466.43/x
  3. Step 3: Cross multiply
    15,539.99x = 21,445.20 × 8,466.43
  4. Step 4: Simplify right side
    15,539.99x = 181,564,284.64
  5. Step 5: Solve for x
    x = 181,564,284.64/15,539.99
  6. Step 6: Final answer
    x = 11,683.68

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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.