Home / 13,962.80-20,987.40-13,703.60

Finding the Fourth Proportional to 13,962.80, 20,987.40 and 13,703.60

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Solution

The fourth proportional to 13,962.80, 20,987.40 and 13,703.60 is: 20,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,962.80 : 20,987.40 = 13,703.60 : x
  2. Step 2: Convert to fraction form
    13,962.80/20,987.40 = 13,703.60/x
  3. Step 3: Cross multiply
    13,962.80x = 20,987.40 × 13,703.60
  4. Step 4: Simplify right side
    13,962.80x = 287,602,934.64
  5. Step 5: Solve for x
    x = 287,602,934.64/13,962.80
  6. Step 6: Final answer
    x = 20,597.80

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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.