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Finding the Fourth Proportional to 30,347.48, 45,530.04 and 12,574.88

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Solution

The fourth proportional to 30,347.48, 45,530.04 and 12,574.88 is: 18,865.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,347.48 : 45,530.04 = 12,574.88 : x
  2. Step 2: Convert to fraction form
    30,347.48/45,530.04 = 12,574.88/x
  3. Step 3: Cross multiply
    30,347.48x = 45,530.04 × 12,574.88
  4. Step 4: Simplify right side
    30,347.48x = 572,534,789.40
  5. Step 5: Solve for x
    x = 572,534,789.40/30,347.48
  6. Step 6: Final answer
    x = 18,865.97

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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.