Home / 30,003.20-45,004.80-19,558.40

Finding the Fourth Proportional to 30,003.20, 45,004.80 and 19,558.40

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Solution

The fourth proportional to 30,003.20, 45,004.80 and 19,558.40 is: 29,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,003.20 : 45,004.80 = 19,558.40 : x
  2. Step 2: Convert to fraction form
    30,003.20/45,004.80 = 19,558.40/x
  3. Step 3: Cross multiply
    30,003.20x = 45,004.80 × 19,558.40
  4. Step 4: Simplify right side
    30,003.20x = 880,221,880.32
  5. Step 5: Solve for x
    x = 880,221,880.32/30,003.20
  6. Step 6: Final answer
    x = 29,337.60

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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.