Home / 21,746.48-30,011.28-12,315.92

Finding the Fourth Proportional to 21,746.48, 30,011.28 and 12,315.92

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Solution

The fourth proportional to 21,746.48, 30,011.28 and 12,315.92 is: 16,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,746.48 : 30,011.28 = 12,315.92 : x
  2. Step 2: Convert to fraction form
    21,746.48/30,011.28 = 12,315.92/x
  3. Step 3: Cross multiply
    21,746.48x = 30,011.28 × 12,315.92
  4. Step 4: Simplify right side
    21,746.48x = 369,616,523.58
  5. Step 5: Solve for x
    x = 369,616,523.58/21,746.48
  6. Step 6: Final answer
    x = 16,996.61

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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.