Home / 21,470.03-29,628.94-12,970.97

Finding the Fourth Proportional to 21,470.03, 29,628.94 and 12,970.97

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Solution

The fourth proportional to 21,470.03, 29,628.94 and 12,970.97 is: 17,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.03 : 29,628.94 = 12,970.97 : x
  2. Step 2: Convert to fraction form
    21,470.03/29,628.94 = 12,970.97/x
  3. Step 3: Cross multiply
    21,470.03x = 29,628.94 × 12,970.97
  4. Step 4: Simplify right side
    21,470.03x = 384,316,091.87
  5. Step 5: Solve for x
    x = 384,316,091.87/21,470.03
  6. Step 6: Final answer
    x = 17,900.12

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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.