Home / 21,657.51-29,878.83-12,701.75

Finding the Fourth Proportional to 21,657.51, 29,878.83 and 12,701.75

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Solution

The fourth proportional to 21,657.51, 29,878.83 and 12,701.75 is: 17,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.51 : 29,878.83 = 12,701.75 : x
  2. Step 2: Convert to fraction form
    21,657.51/29,878.83 = 12,701.75/x
  3. Step 3: Cross multiply
    21,657.51x = 29,878.83 × 12,701.75
  4. Step 4: Simplify right side
    21,657.51x = 379,513,279.56
  5. Step 5: Solve for x
    x = 379,513,279.56/21,657.51
  6. Step 6: Final answer
    x = 17,523.40

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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.