Home / 25,430.63-38,145.95-7,900.46

Finding the Fourth Proportional to 25,430.63, 38,145.95 and 7,900.46

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Solution

The fourth proportional to 25,430.63, 38,145.95 and 7,900.46 is: 11,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.63 : 38,145.95 = 7,900.46 : x
  2. Step 2: Convert to fraction form
    25,430.63/38,145.95 = 7,900.46/x
  3. Step 3: Cross multiply
    25,430.63x = 38,145.95 × 7,900.46
  4. Step 4: Simplify right side
    25,430.63x = 301,370,321.90
  5. Step 5: Solve for x
    x = 301,370,321.90/25,430.63
  6. Step 6: Final answer
    x = 11,850.68

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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.