Home / 12,666.59-17,386.26-12,125.31

Finding the Fourth Proportional to 12,666.59, 17,386.26 and 12,125.31

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Solution

The fourth proportional to 12,666.59, 17,386.26 and 12,125.31 is: 16,643.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.59 : 17,386.26 = 12,125.31 : x
  2. Step 2: Convert to fraction form
    12,666.59/17,386.26 = 12,125.31/x
  3. Step 3: Cross multiply
    12,666.59x = 17,386.26 × 12,125.31
  4. Step 4: Simplify right side
    12,666.59x = 210,813,731.61
  5. Step 5: Solve for x
    x = 210,813,731.61/12,666.59
  6. Step 6: Final answer
    x = 16,643.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.