Home / 21,901.34-30,223.88-12,953.27

Finding the Fourth Proportional to 21,901.34, 30,223.88 and 12,953.27

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Solution

The fourth proportional to 21,901.34, 30,223.88 and 12,953.27 is: 17,875.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.34 : 30,223.88 = 12,953.27 : x
  2. Step 2: Convert to fraction form
    21,901.34/30,223.88 = 12,953.27/x
  3. Step 3: Cross multiply
    21,901.34x = 30,223.88 × 12,953.27
  4. Step 4: Simplify right side
    21,901.34x = 391,497,959.35
  5. Step 5: Solve for x
    x = 391,497,959.35/21,901.34
  6. Step 6: Final answer
    x = 17,875.53

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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.