Home / 30,090.24-41,486.04-20,642.40

Finding the Fourth Proportional to 30,090.24, 41,486.04 and 20,642.40

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Solution

The fourth proportional to 30,090.24, 41,486.04 and 20,642.40 is: 28,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,090.24 : 41,486.04 = 20,642.40 : x
  2. Step 2: Convert to fraction form
    30,090.24/41,486.04 = 20,642.40/x
  3. Step 3: Cross multiply
    30,090.24x = 41,486.04 × 20,642.40
  4. Step 4: Simplify right side
    30,090.24x = 856,371,432.10
  5. Step 5: Solve for x
    x = 856,371,432.10/30,090.24
  6. Step 6: Final answer
    x = 28,460.11

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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.