Home / 20,717.10-31,075.65-19,113.30

Finding the Fourth Proportional to 20,717.10, 31,075.65 and 19,113.30

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Solution

The fourth proportional to 20,717.10, 31,075.65 and 19,113.30 is: 28,669.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.10 : 31,075.65 = 19,113.30 : x
  2. Step 2: Convert to fraction form
    20,717.10/31,075.65 = 19,113.30/x
  3. Step 3: Cross multiply
    20,717.10x = 31,075.65 × 19,113.30
  4. Step 4: Simplify right side
    20,717.10x = 593,958,221.15
  5. Step 5: Solve for x
    x = 593,958,221.15/20,717.10
  6. Step 6: Final answer
    x = 28,669.95

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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.