Home / 11,887.56-16,417.08-8,898.66

Finding the Fourth Proportional to 11,887.56, 16,417.08 and 8,898.66

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Solution

The fourth proportional to 11,887.56, 16,417.08 and 8,898.66 is: 12,289.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.56 : 16,417.08 = 8,898.66 : x
  2. Step 2: Convert to fraction form
    11,887.56/16,417.08 = 8,898.66/x
  3. Step 3: Cross multiply
    11,887.56x = 16,417.08 × 8,898.66
  4. Step 4: Simplify right side
    11,887.56x = 146,090,013.11
  5. Step 5: Solve for x
    x = 146,090,013.11/11,887.56
  6. Step 6: Final answer
    x = 12,289.32

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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.