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Finding the Fourth Proportional to 30,656.04, 45,983.90 and 9,879.72

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Solution

The fourth proportional to 30,656.04, 45,983.90 and 9,879.72 is: 14,819.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,656.04 : 45,983.90 = 9,879.72 : x
  2. Step 2: Convert to fraction form
    30,656.04/45,983.90 = 9,879.72/x
  3. Step 3: Cross multiply
    30,656.04x = 45,983.90 × 9,879.72
  4. Step 4: Simplify right side
    30,656.04x = 454,308,056.51
  5. Step 5: Solve for x
    x = 454,308,056.51/30,656.04
  6. Step 6: Final answer
    x = 14,819.53

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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.