Home / 21,477.27-29,661.15-14,780.19

Finding the Fourth Proportional to 21,477.27, 29,661.15 and 14,780.19

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Solution

The fourth proportional to 21,477.27, 29,661.15 and 14,780.19 is: 20,412.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477.27 : 29,661.15 = 14,780.19 : x
  2. Step 2: Convert to fraction form
    21,477.27/29,661.15 = 14,780.19/x
  3. Step 3: Cross multiply
    21,477.27x = 29,661.15 × 14,780.19
  4. Step 4: Simplify right side
    21,477.27x = 438,397,432.62
  5. Step 5: Solve for x
    x = 438,397,432.62/21,477.27
  6. Step 6: Final answer
    x = 20,412.16

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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.