Home / 30,813.84-42,529.68-19,476.12

Finding the Fourth Proportional to 30,813.84, 42,529.68 and 19,476.12

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Solution

The fourth proportional to 30,813.84, 42,529.68 and 19,476.12 is: 26,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.84 : 42,529.68 = 19,476.12 : x
  2. Step 2: Convert to fraction form
    30,813.84/42,529.68 = 19,476.12/x
  3. Step 3: Cross multiply
    30,813.84x = 42,529.68 × 19,476.12
  4. Step 4: Simplify right side
    30,813.84x = 828,313,151.24
  5. Step 5: Solve for x
    x = 828,313,151.24/30,813.84
  6. Step 6: Final answer
    x = 26,881.21

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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.