Home / 21,334.95-29,428.52-12,951.45

Finding the Fourth Proportional to 21,334.95, 29,428.52 and 12,951.45

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Solution

The fourth proportional to 21,334.95, 29,428.52 and 12,951.45 is: 17,864.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.95 : 29,428.52 = 12,951.45 : x
  2. Step 2: Convert to fraction form
    21,334.95/29,428.52 = 12,951.45/x
  3. Step 3: Cross multiply
    21,334.95x = 29,428.52 × 12,951.45
  4. Step 4: Simplify right side
    21,334.95x = 381,141,903.09
  5. Step 5: Solve for x
    x = 381,141,903.09/21,334.95
  6. Step 6: Final answer
    x = 17,864.68

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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.