Home / 21,768.68-30,030.04-14,211.48

Finding the Fourth Proportional to 21,768.68, 30,030.04 and 14,211.48

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Solution

The fourth proportional to 21,768.68, 30,030.04 and 14,211.48 is: 19,604.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.68 : 30,030.04 = 14,211.48 : x
  2. Step 2: Convert to fraction form
    21,768.68/30,030.04 = 14,211.48/x
  3. Step 3: Cross multiply
    21,768.68x = 30,030.04 × 14,211.48
  4. Step 4: Simplify right side
    21,768.68x = 426,771,312.86
  5. Step 5: Solve for x
    x = 426,771,312.86/21,768.68
  6. Step 6: Final answer
    x = 19,604.83

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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.