Home / 21,746.34-30,007.14-12,790.58

Finding the Fourth Proportional to 21,746.34, 30,007.14 and 12,790.58

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Solution

The fourth proportional to 21,746.34, 30,007.14 and 12,790.58 is: 17,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,746.34 : 30,007.14 = 12,790.58 : x
  2. Step 2: Convert to fraction form
    21,746.34/30,007.14 = 12,790.58/x
  3. Step 3: Cross multiply
    21,746.34x = 30,007.14 × 12,790.58
  4. Step 4: Simplify right side
    21,746.34x = 383,808,724.74
  5. Step 5: Solve for x
    x = 383,808,724.74/21,746.34
  6. Step 6: Final answer
    x = 17,649.35

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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.