Home / 30,090.72-45,070.38-12,507.24

Finding the Fourth Proportional to 30,090.72, 45,070.38 and 12,507.24

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Solution

The fourth proportional to 30,090.72, 45,070.38 and 12,507.24 is: 18,733.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,090.72 : 45,070.38 = 12,507.24 : x
  2. Step 2: Convert to fraction form
    30,090.72/45,070.38 = 12,507.24/x
  3. Step 3: Cross multiply
    30,090.72x = 45,070.38 × 12,507.24
  4. Step 4: Simplify right side
    30,090.72x = 563,706,059.55
  5. Step 5: Solve for x
    x = 563,706,059.55/30,090.72
  6. Step 6: Final answer
    x = 18,733.55

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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.