Home / 21,966.23-30,312.74-12,406.50

Finding the Fourth Proportional to 21,966.23, 30,312.74 and 12,406.50

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Solution

The fourth proportional to 21,966.23, 30,312.74 and 12,406.50 is: 17,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.23 : 30,312.74 = 12,406.50 : x
  2. Step 2: Convert to fraction form
    21,966.23/30,312.74 = 12,406.50/x
  3. Step 3: Cross multiply
    21,966.23x = 30,312.74 × 12,406.50
  4. Step 4: Simplify right side
    21,966.23x = 376,074,946.78
  5. Step 5: Solve for x
    x = 376,074,946.78/21,966.23
  6. Step 6: Final answer
    x = 17,120.60

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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.