Home / 30,837.55-42,556.84-18,898.58

Finding the Fourth Proportional to 30,837.55, 42,556.84 and 18,898.58

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Solution

The fourth proportional to 30,837.55, 42,556.84 and 18,898.58 is: 26,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,837.55 : 42,556.84 = 18,898.58 : x
  2. Step 2: Convert to fraction form
    30,837.55/42,556.84 = 18,898.58/x
  3. Step 3: Cross multiply
    30,837.55x = 42,556.84 × 18,898.58
  4. Step 4: Simplify right side
    30,837.55x = 804,263,679.75
  5. Step 5: Solve for x
    x = 804,263,679.75/30,837.55
  6. Step 6: Final answer
    x = 26,080.66

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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.