Home / 30,677.36-42,342.28-18,750.70

Finding the Fourth Proportional to 30,677.36, 42,342.28 and 18,750.70

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Solution

The fourth proportional to 30,677.36, 42,342.28 and 18,750.70 is: 25,880.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,677.36 : 42,342.28 = 18,750.70 : x
  2. Step 2: Convert to fraction form
    30,677.36/42,342.28 = 18,750.70/x
  3. Step 3: Cross multiply
    30,677.36x = 42,342.28 × 18,750.70
  4. Step 4: Simplify right side
    30,677.36x = 793,947,236.86
  5. Step 5: Solve for x
    x = 793,947,236.86/30,677.36
  6. Step 6: Final answer
    x = 25,880.56

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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.