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Finding the Fourth Proportional to 56,407.98, 84,578.74 and 18,958.44

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Solution

The fourth proportional to 56,407.98, 84,578.74 and 18,958.44 is: 28,426.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,407.98 : 84,578.74 = 18,958.44 : x
  2. Step 2: Convert to fraction form
    56,407.98/84,578.74 = 18,958.44/x
  3. Step 3: Cross multiply
    56,407.98x = 84,578.74 × 18,958.44
  4. Step 4: Simplify right side
    56,407.98x = 1,603,480,967.57
  5. Step 5: Solve for x
    x = 1,603,480,967.57/56,407.98
  6. Step 6: Final answer
    x = 28,426.49

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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.