Home / 20,506.60-28,298.64-12,548.80

Finding the Fourth Proportional to 20,506.60, 28,298.64 and 12,548.80

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Solution

The fourth proportional to 20,506.60, 28,298.64 and 12,548.80 is: 17,317.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.60 : 28,298.64 = 12,548.80 : x
  2. Step 2: Convert to fraction form
    20,506.60/28,298.64 = 12,548.80/x
  3. Step 3: Cross multiply
    20,506.60x = 28,298.64 × 12,548.80
  4. Step 4: Simplify right side
    20,506.60x = 355,113,973.63
  5. Step 5: Solve for x
    x = 355,113,973.63/20,506.60
  6. Step 6: Final answer
    x = 17,317.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.