Home / 30,953.10-42,672.96-21,262.26

Finding the Fourth Proportional to 30,953.10, 42,672.96 and 21,262.26

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Solution

The fourth proportional to 30,953.10, 42,672.96 and 21,262.26 is: 29,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,953.10 : 42,672.96 = 21,262.26 : x
  2. Step 2: Convert to fraction form
    30,953.10/42,672.96 = 21,262.26/x
  3. Step 3: Cross multiply
    30,953.10x = 42,672.96 × 21,262.26
  4. Step 4: Simplify right side
    30,953.10x = 907,323,570.49
  5. Step 5: Solve for x
    x = 907,323,570.49/30,953.10
  6. Step 6: Final answer
    x = 29,312.85

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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.