Home / 21,472.07-29,630.76-12,519.95

Finding the Fourth Proportional to 21,472.07, 29,630.76 and 12,519.95

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Solution

The fourth proportional to 21,472.07, 29,630.76 and 12,519.95 is: 17,277.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.07 : 29,630.76 = 12,519.95 : x
  2. Step 2: Convert to fraction form
    21,472.07/29,630.76 = 12,519.95/x
  3. Step 3: Cross multiply
    21,472.07x = 29,630.76 × 12,519.95
  4. Step 4: Simplify right side
    21,472.07x = 370,975,485.51
  5. Step 5: Solve for x
    x = 370,975,485.51/21,472.07
  6. Step 6: Final answer
    x = 17,277.12

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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.