Home / 30,122.65-41,573.10-21,502.21

Finding the Fourth Proportional to 30,122.65, 41,573.10 and 21,502.21

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Solution

The fourth proportional to 30,122.65, 41,573.10 and 21,502.21 is: 29,675.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,122.65 : 41,573.10 = 21,502.21 : x
  2. Step 2: Convert to fraction form
    30,122.65/41,573.10 = 21,502.21/x
  3. Step 3: Cross multiply
    30,122.65x = 41,573.10 × 21,502.21
  4. Step 4: Simplify right side
    30,122.65x = 893,913,526.55
  5. Step 5: Solve for x
    x = 893,913,526.55/30,122.65
  6. Step 6: Final answer
    x = 29,675.79

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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.