Home / 30,945.84-42,712.28-19,630.95

Finding the Fourth Proportional to 30,945.84, 42,712.28 and 19,630.95

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Solution

The fourth proportional to 30,945.84, 42,712.28 and 19,630.95 is: 27,095.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,945.84 : 42,712.28 = 19,630.95 : x
  2. Step 2: Convert to fraction form
    30,945.84/42,712.28 = 19,630.95/x
  3. Step 3: Cross multiply
    30,945.84x = 42,712.28 × 19,630.95
  4. Step 4: Simplify right side
    30,945.84x = 838,482,633.07
  5. Step 5: Solve for x
    x = 838,482,633.07/30,945.84
  6. Step 6: Final answer
    x = 27,095.16

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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.