Home / 19,480.75-26,885.50-11,421.18

Finding the Fourth Proportional to 19,480.75, 26,885.50 and 11,421.18

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Solution

The fourth proportional to 19,480.75, 26,885.50 and 11,421.18 is: 15,762.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,480.75 : 26,885.50 = 11,421.18 : x
  2. Step 2: Convert to fraction form
    19,480.75/26,885.50 = 11,421.18/x
  3. Step 3: Cross multiply
    19,480.75x = 26,885.50 × 11,421.18
  4. Step 4: Simplify right side
    19,480.75x = 307,064,134.89
  5. Step 5: Solve for x
    x = 307,064,134.89/19,480.75
  6. Step 6: Final answer
    x = 15,762.44

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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.