Home / 30,259.20-45,340.20-28,509.60

Finding the Fourth Proportional to 30,259.20, 45,340.20 and 28,509.60

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Solution

The fourth proportional to 30,259.20, 45,340.20 and 28,509.60 is: 42,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,259.20 : 45,340.20 = 28,509.60 : x
  2. Step 2: Convert to fraction form
    30,259.20/45,340.20 = 28,509.60/x
  3. Step 3: Cross multiply
    30,259.20x = 45,340.20 × 28,509.60
  4. Step 4: Simplify right side
    30,259.20x = 1,292,630,965.92
  5. Step 5: Solve for x
    x = 1,292,630,965.92/30,259.20
  6. Step 6: Final answer
    x = 42,718.61

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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.