Home / 15,342.60-21,177.54-11,801.64

Finding the Fourth Proportional to 15,342.60, 21,177.54 and 11,801.64

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Solution

The fourth proportional to 15,342.60, 21,177.54 and 11,801.64 is: 16,289.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.60 : 21,177.54 = 11,801.64 : x
  2. Step 2: Convert to fraction form
    15,342.60/21,177.54 = 11,801.64/x
  3. Step 3: Cross multiply
    15,342.60x = 21,177.54 × 11,801.64
  4. Step 4: Simplify right side
    15,342.60x = 249,929,703.17
  5. Step 5: Solve for x
    x = 249,929,703.17/15,342.60
  6. Step 6: Final answer
    x = 16,289.92

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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.