Home / 20,725.84-28,594.64-12,656.55

Finding the Fourth Proportional to 20,725.84, 28,594.64 and 12,656.55

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Solution

The fourth proportional to 20,725.84, 28,594.64 and 12,656.55 is: 17,461.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.84 : 28,594.64 = 12,656.55 : x
  2. Step 2: Convert to fraction form
    20,725.84/28,594.64 = 12,656.55/x
  3. Step 3: Cross multiply
    20,725.84x = 28,594.64 × 12,656.55
  4. Step 4: Simplify right side
    20,725.84x = 361,909,490.89
  5. Step 5: Solve for x
    x = 361,909,490.89/20,725.84
  6. Step 6: Final answer
    x = 17,461.75

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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.