Home / 13,173.59-19,666.47-12,712.16

Finding the Fourth Proportional to 13,173.59, 19,666.47 and 12,712.16

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Solution

The fourth proportional to 13,173.59, 19,666.47 and 12,712.16 is: 18,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.59 : 19,666.47 = 12,712.16 : x
  2. Step 2: Convert to fraction form
    13,173.59/19,666.47 = 12,712.16/x
  3. Step 3: Cross multiply
    13,173.59x = 19,666.47 × 12,712.16
  4. Step 4: Simplify right side
    13,173.59x = 250,003,214.94
  5. Step 5: Solve for x
    x = 250,003,214.94/13,173.59
  6. Step 6: Final answer
    x = 18,977.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.