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Finding the Fourth Proportional to 56,403, 84,605.86 and 18,963.56

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Solution

The fourth proportional to 56,403, 84,605.86 and 18,963.56 is: 28,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,403 : 84,605.86 = 18,963.56 : x
  2. Step 2: Convert to fraction form
    56,403/84,605.86 = 18,963.56/x
  3. Step 3: Cross multiply
    56,403x = 84,605.86 × 18,963.56
  4. Step 4: Simplify right side
    56,403x = 1,604,428,302.46
  5. Step 5: Solve for x
    x = 1,604,428,302.46/56,403
  6. Step 6: Final answer
    x = 28,445.80

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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.