Home / 13,907.80-19,186.34-12,316.07

Finding the Fourth Proportional to 13,907.80, 19,186.34 and 12,316.07

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Solution

The fourth proportional to 13,907.80, 19,186.34 and 12,316.07 is: 16,990.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.80 : 19,186.34 = 12,316.07 : x
  2. Step 2: Convert to fraction form
    13,907.80/19,186.34 = 12,316.07/x
  3. Step 3: Cross multiply
    13,907.80x = 19,186.34 × 12,316.07
  4. Step 4: Simplify right side
    13,907.80x = 236,300,306.48
  5. Step 5: Solve for x
    x = 236,300,306.48/13,907.80
  6. Step 6: Final answer
    x = 16,990.49

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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.