Home / 30,619.60-45,929.40-9,845.20

Finding the Fourth Proportional to 30,619.60, 45,929.40 and 9,845.20

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Solution

The fourth proportional to 30,619.60, 45,929.40 and 9,845.20 is: 14,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,619.60 : 45,929.40 = 9,845.20 : x
  2. Step 2: Convert to fraction form
    30,619.60/45,929.40 = 9,845.20/x
  3. Step 3: Cross multiply
    30,619.60x = 45,929.40 × 9,845.20
  4. Step 4: Simplify right side
    30,619.60x = 452,184,128.88
  5. Step 5: Solve for x
    x = 452,184,128.88/30,619.60
  6. Step 6: Final answer
    x = 14,767.80

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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.