Home / 21,470.67-29,623.90-12,393.81

Finding the Fourth Proportional to 21,470.67, 29,623.90 and 12,393.81

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Solution

The fourth proportional to 21,470.67, 29,623.90 and 12,393.81 is: 17,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.67 : 29,623.90 = 12,393.81 : x
  2. Step 2: Convert to fraction form
    21,470.67/29,623.90 = 12,393.81/x
  3. Step 3: Cross multiply
    21,470.67x = 29,623.90 × 12,393.81
  4. Step 4: Simplify right side
    21,470.67x = 367,152,988.06
  5. Step 5: Solve for x
    x = 367,152,988.06/21,470.67
  6. Step 6: Final answer
    x = 17,100.21

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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.