Home / 21,953.43-30,290.36-13,000.50

Finding the Fourth Proportional to 21,953.43, 30,290.36 and 13,000.50

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Solution

The fourth proportional to 21,953.43, 30,290.36 and 13,000.50 is: 17,937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.43 : 30,290.36 = 13,000.50 : x
  2. Step 2: Convert to fraction form
    21,953.43/30,290.36 = 13,000.50/x
  3. Step 3: Cross multiply
    21,953.43x = 30,290.36 × 13,000.50
  4. Step 4: Simplify right side
    21,953.43x = 393,789,760.18
  5. Step 5: Solve for x
    x = 393,789,760.18/21,953.43
  6. Step 6: Final answer
    x = 17,937.50

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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.