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Finding the Fourth Proportional to 30,256.80, 45,386.48 and 9,480.48

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Solution

The fourth proportional to 30,256.80, 45,386.48 and 9,480.48 is: 14,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,256.80 : 45,386.48 = 9,480.48 : x
  2. Step 2: Convert to fraction form
    30,256.80/45,386.48 = 9,480.48/x
  3. Step 3: Cross multiply
    30,256.80x = 45,386.48 × 9,480.48
  4. Step 4: Simplify right side
    30,256.80x = 430,285,615.91
  5. Step 5: Solve for x
    x = 430,285,615.91/30,256.80
  6. Step 6: Final answer
    x = 14,221.12

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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.