Home / 30,291.30-45,485.55-20,474.10

Finding the Fourth Proportional to 30,291.30, 45,485.55 and 20,474.10

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Solution

The fourth proportional to 30,291.30, 45,485.55 and 20,474.10 is: 30,744.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.30 : 45,485.55 = 20,474.10 : x
  2. Step 2: Convert to fraction form
    30,291.30/45,485.55 = 20,474.10/x
  3. Step 3: Cross multiply
    30,291.30x = 45,485.55 × 20,474.10
  4. Step 4: Simplify right side
    30,291.30x = 931,275,699.26
  5. Step 5: Solve for x
    x = 931,275,699.26/30,291.30
  6. Step 6: Final answer
    x = 30,744.00

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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.