Home / 31,638.21-43,075.68-31,539.80

Finding the Fourth Proportional to 31,638.21, 43,075.68 and 31,539.80

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Solution

The fourth proportional to 31,638.21, 43,075.68 and 31,539.80 is: 42,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.21 : 43,075.68 = 31,539.80 : x
  2. Step 2: Convert to fraction form
    31,638.21/43,075.68 = 31,539.80/x
  3. Step 3: Cross multiply
    31,638.21x = 43,075.68 × 31,539.80
  4. Step 4: Simplify right side
    31,638.21x = 1,358,598,116.69
  5. Step 5: Solve for x
    x = 1,358,598,116.69/31,638.21
  6. Step 6: Final answer
    x = 42,941.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.