Home / 42,432.63-63,634.05-12,438.63

Finding the Fourth Proportional to 42,432.63, 63,634.05 and 12,438.63

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Solution

The fourth proportional to 42,432.63, 63,634.05 and 12,438.63 is: 18,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,432.63 : 63,634.05 = 12,438.63 : x
  2. Step 2: Convert to fraction form
    42,432.63/63,634.05 = 12,438.63/x
  3. Step 3: Cross multiply
    42,432.63x = 63,634.05 × 12,438.63
  4. Step 4: Simplify right side
    42,432.63x = 791,520,403.35
  5. Step 5: Solve for x
    x = 791,520,403.35/42,432.63
  6. Step 6: Final answer
    x = 18,653.58

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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.