Home / 30,090.99-45,139.01-10,361.55

Finding the Fourth Proportional to 30,090.99, 45,139.01 and 10,361.55

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Solution

The fourth proportional to 30,090.99, 45,139.01 and 10,361.55 is: 15,543.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,090.99 : 45,139.01 = 10,361.55 : x
  2. Step 2: Convert to fraction form
    30,090.99/45,139.01 = 10,361.55/x
  3. Step 3: Cross multiply
    30,090.99x = 45,139.01 × 10,361.55
  4. Step 4: Simplify right side
    30,090.99x = 467,710,057.26
  5. Step 5: Solve for x
    x = 467,710,057.26/30,090.99
  6. Step 6: Final answer
    x = 15,543.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.