Home / 18,211.84-25,130.55-13,434.31

Finding the Fourth Proportional to 18,211.84, 25,130.55 and 13,434.31

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Solution

The fourth proportional to 18,211.84, 25,130.55 and 13,434.31 is: 18,538.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.84 : 25,130.55 = 13,434.31 : x
  2. Step 2: Convert to fraction form
    18,211.84/25,130.55 = 13,434.31/x
  3. Step 3: Cross multiply
    18,211.84x = 25,130.55 × 13,434.31
  4. Step 4: Simplify right side
    18,211.84x = 337,611,539.60
  5. Step 5: Solve for x
    x = 337,611,539.60/18,211.84
  6. Step 6: Final answer
    x = 18,538.03

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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.