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Finding the Fourth Proportional to 30,055.88, 45,073.60 and 12,283.88

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Solution

The fourth proportional to 30,055.88, 45,073.60 and 12,283.88 is: 18,421.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,055.88 : 45,073.60 = 12,283.88 : x
  2. Step 2: Convert to fraction form
    30,055.88/45,073.60 = 12,283.88/x
  3. Step 3: Cross multiply
    30,055.88x = 45,073.60 × 12,283.88
  4. Step 4: Simplify right side
    30,055.88x = 553,678,437.49
  5. Step 5: Solve for x
    x = 553,678,437.49/30,055.88
  6. Step 6: Final answer
    x = 18,421.63

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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.