Home / 13,370.04-20,075.80-12,778.42

Finding the Fourth Proportional to 13,370.04, 20,075.80 and 12,778.42

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Solution

The fourth proportional to 13,370.04, 20,075.80 and 12,778.42 is: 19,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.04 : 20,075.80 = 12,778.42 : x
  2. Step 2: Convert to fraction form
    13,370.04/20,075.80 = 12,778.42/x
  3. Step 3: Cross multiply
    13,370.04x = 20,075.80 × 12,778.42
  4. Step 4: Simplify right side
    13,370.04x = 256,536,922.10
  5. Step 5: Solve for x
    x = 256,536,922.10/13,370.04
  6. Step 6: Final answer
    x = 19,187.45

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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.