Home / 12,289.62-16,953.21-8,312.07

Finding the Fourth Proportional to 12,289.62, 16,953.21 and 8,312.07

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Solution

The fourth proportional to 12,289.62, 16,953.21 and 8,312.07 is: 11,466.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.62 : 16,953.21 = 8,312.07 : x
  2. Step 2: Convert to fraction form
    12,289.62/16,953.21 = 8,312.07/x
  3. Step 3: Cross multiply
    12,289.62x = 16,953.21 × 8,312.07
  4. Step 4: Simplify right side
    12,289.62x = 140,916,268.24
  5. Step 5: Solve for x
    x = 140,916,268.24/12,289.62
  6. Step 6: Final answer
    x = 11,466.28

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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.