Home / 13,925.79-19,218.60-7,638.30

Finding the Fourth Proportional to 13,925.79, 19,218.60 and 7,638.30

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Solution

The fourth proportional to 13,925.79, 19,218.60 and 7,638.30 is: 10,541.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.79 : 19,218.60 = 7,638.30 : x
  2. Step 2: Convert to fraction form
    13,925.79/19,218.60 = 7,638.30/x
  3. Step 3: Cross multiply
    13,925.79x = 19,218.60 × 7,638.30
  4. Step 4: Simplify right side
    13,925.79x = 146,797,432.38
  5. Step 5: Solve for x
    x = 146,797,432.38/13,925.79
  6. Step 6: Final answer
    x = 10,541.41

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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.