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Finding the Fourth Proportional to 30,555.63, 45,820.08 and 18,079.20

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Solution

The fourth proportional to 30,555.63, 45,820.08 and 18,079.20 is: 27,110.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.63 : 45,820.08 = 18,079.20 : x
  2. Step 2: Convert to fraction form
    30,555.63/45,820.08 = 18,079.20/x
  3. Step 3: Cross multiply
    30,555.63x = 45,820.08 × 18,079.20
  4. Step 4: Simplify right side
    30,555.63x = 828,390,390.34
  5. Step 5: Solve for x
    x = 828,390,390.34/30,555.63
  6. Step 6: Final answer
    x = 27,110.89

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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.