Home / 21,981.52-30,332.08-12,548.26

Finding the Fourth Proportional to 21,981.52, 30,332.08 and 12,548.26

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Solution

The fourth proportional to 21,981.52, 30,332.08 and 12,548.26 is: 17,315.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.52 : 30,332.08 = 12,548.26 : x
  2. Step 2: Convert to fraction form
    21,981.52/30,332.08 = 12,548.26/x
  3. Step 3: Cross multiply
    21,981.52x = 30,332.08 × 12,548.26
  4. Step 4: Simplify right side
    21,981.52x = 380,614,826.18
  5. Step 5: Solve for x
    x = 380,614,826.18/21,981.52
  6. Step 6: Final answer
    x = 17,315.22

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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.