Home / 30,502.95-45,694.84-21,013.59

Finding the Fourth Proportional to 30,502.95, 45,694.84 and 21,013.59

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Solution

The fourth proportional to 30,502.95, 45,694.84 and 21,013.59 is: 31,479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,502.95 : 45,694.84 = 21,013.59 : x
  2. Step 2: Convert to fraction form
    30,502.95/45,694.84 = 21,013.59/x
  3. Step 3: Cross multiply
    30,502.95x = 45,694.84 × 21,013.59
  4. Step 4: Simplify right side
    30,502.95x = 960,212,580.34
  5. Step 5: Solve for x
    x = 960,212,580.34/30,502.95
  6. Step 6: Final answer
    x = 31,479.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.