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Finding the Fourth Proportional to 30,498.39, 45,729.36 and 11,762.89

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Solution

The fourth proportional to 30,498.39, 45,729.36 and 11,762.89 is: 17,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,498.39 : 45,729.36 = 11,762.89 : x
  2. Step 2: Convert to fraction form
    30,498.39/45,729.36 = 11,762.89/x
  3. Step 3: Cross multiply
    30,498.39x = 45,729.36 × 11,762.89
  4. Step 4: Simplify right side
    30,498.39x = 537,909,317.13
  5. Step 5: Solve for x
    x = 537,909,317.13/30,498.39
  6. Step 6: Final answer
    x = 17,637.30

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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.