Home / 25,638.37-38,455.80-12,320.89

Finding the Fourth Proportional to 25,638.37, 38,455.80 and 12,320.89

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Solution

The fourth proportional to 25,638.37, 38,455.80 and 12,320.89 is: 18,480.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,638.37 : 38,455.80 = 12,320.89 : x
  2. Step 2: Convert to fraction form
    25,638.37/38,455.80 = 12,320.89/x
  3. Step 3: Cross multiply
    25,638.37x = 38,455.80 × 12,320.89
  4. Step 4: Simplify right side
    25,638.37x = 473,809,681.66
  5. Step 5: Solve for x
    x = 473,809,681.66/25,638.37
  6. Step 6: Final answer
    x = 18,480.49

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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.