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Finding the Fourth Proportional to 30,398.60, 45,581.70 and 12,848.60

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Solution

The fourth proportional to 30,398.60, 45,581.70 and 12,848.60 is: 19,266.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,398.60 : 45,581.70 = 12,848.60 : x
  2. Step 2: Convert to fraction form
    30,398.60/45,581.70 = 12,848.60/x
  3. Step 3: Cross multiply
    30,398.60x = 45,581.70 × 12,848.60
  4. Step 4: Simplify right side
    30,398.60x = 585,661,030.62
  5. Step 5: Solve for x
    x = 585,661,030.62/30,398.60
  6. Step 6: Final answer
    x = 19,266.05

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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.