Home / 19,347.60-29,021.40-12,772.25

Finding the Fourth Proportional to 19,347.60, 29,021.40 and 12,772.25

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Solution

The fourth proportional to 19,347.60, 29,021.40 and 12,772.25 is: 19,158.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,347.60 : 29,021.40 = 12,772.25 : x
  2. Step 2: Convert to fraction form
    19,347.60/29,021.40 = 12,772.25/x
  3. Step 3: Cross multiply
    19,347.60x = 29,021.40 × 12,772.25
  4. Step 4: Simplify right side
    19,347.60x = 370,668,576.15
  5. Step 5: Solve for x
    x = 370,668,576.15/19,347.60
  6. Step 6: Final answer
    x = 19,158.38

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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.