Home / 28,489.72-39,312.90-16,555.60

Finding the Fourth Proportional to 28,489.72, 39,312.90 and 16,555.60

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Solution

The fourth proportional to 28,489.72, 39,312.90 and 16,555.60 is: 22,845.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.72 : 39,312.90 = 16,555.60 : x
  2. Step 2: Convert to fraction form
    28,489.72/39,312.90 = 16,555.60/x
  3. Step 3: Cross multiply
    28,489.72x = 39,312.90 × 16,555.60
  4. Step 4: Simplify right side
    28,489.72x = 650,848,647.24
  5. Step 5: Solve for x
    x = 650,848,647.24/28,489.72
  6. Step 6: Final answer
    x = 22,845.03

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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.