Home / 31,072.64-42,881.28-18,495.68

Finding the Fourth Proportional to 31,072.64, 42,881.28 and 18,495.68

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Solution

The fourth proportional to 31,072.64, 42,881.28 and 18,495.68 is: 25,524.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,072.64 : 42,881.28 = 18,495.68 : x
  2. Step 2: Convert to fraction form
    31,072.64/42,881.28 = 18,495.68/x
  3. Step 3: Cross multiply
    31,072.64x = 42,881.28 × 18,495.68
  4. Step 4: Simplify right side
    31,072.64x = 793,118,432.87
  5. Step 5: Solve for x
    x = 793,118,432.87/31,072.64
  6. Step 6: Final answer
    x = 25,524.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.