Home / 30,135.78-45,204.08-14,342.45

Finding the Fourth Proportional to 30,135.78, 45,204.08 and 14,342.45

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Solution

The fourth proportional to 30,135.78, 45,204.08 and 14,342.45 is: 21,513.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.78 : 45,204.08 = 14,342.45 : x
  2. Step 2: Convert to fraction form
    30,135.78/45,204.08 = 14,342.45/x
  3. Step 3: Cross multiply
    30,135.78x = 45,204.08 × 14,342.45
  4. Step 4: Simplify right side
    30,135.78x = 648,336,959.46
  5. Step 5: Solve for x
    x = 648,336,959.46/30,135.78
  6. Step 6: Final answer
    x = 21,513.86

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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.