Home / 25,666.40-38,467.20-18,732.80

Finding the Fourth Proportional to 25,666.40, 38,467.20 and 18,732.80

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Solution

The fourth proportional to 25,666.40, 38,467.20 and 18,732.80 is: 28,075.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,666.40 : 38,467.20 = 18,732.80 : x
  2. Step 2: Convert to fraction form
    25,666.40/38,467.20 = 18,732.80/x
  3. Step 3: Cross multiply
    25,666.40x = 38,467.20 × 18,732.80
  4. Step 4: Simplify right side
    25,666.40x = 720,598,364.16
  5. Step 5: Solve for x
    x = 720,598,364.16/25,666.40
  6. Step 6: Final answer
    x = 28,075.55

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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.