Home / 30,969.63-42,716.34-19,039.55

Finding the Fourth Proportional to 30,969.63, 42,716.34 and 19,039.55

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Solution

The fourth proportional to 30,969.63, 42,716.34 and 19,039.55 is: 26,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.63 : 42,716.34 = 19,039.55 : x
  2. Step 2: Convert to fraction form
    30,969.63/42,716.34 = 19,039.55/x
  3. Step 3: Cross multiply
    30,969.63x = 42,716.34 × 19,039.55
  4. Step 4: Simplify right side
    30,969.63x = 813,299,677.67
  5. Step 5: Solve for x
    x = 813,299,677.67/30,969.63
  6. Step 6: Final answer
    x = 26,261.20

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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.