Home / 42,725.55-64,094.40-13,145.79

Finding the Fourth Proportional to 42,725.55, 64,094.40 and 13,145.79

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Solution

The fourth proportional to 42,725.55, 64,094.40 and 13,145.79 is: 19,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,725.55 : 64,094.40 = 13,145.79 : x
  2. Step 2: Convert to fraction form
    42,725.55/64,094.40 = 13,145.79/x
  3. Step 3: Cross multiply
    42,725.55x = 64,094.40 × 13,145.79
  4. Step 4: Simplify right side
    42,725.55x = 842,571,522.58
  5. Step 5: Solve for x
    x = 842,571,522.58/42,725.55
  6. Step 6: Final answer
    x = 19,720.55

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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.