Home / 19,445.83-26,810.67-12,720.80

Finding the Fourth Proportional to 19,445.83, 26,810.67 and 12,720.80

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Solution

The fourth proportional to 19,445.83, 26,810.67 and 12,720.80 is: 17,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,445.83 : 26,810.67 = 12,720.80 : x
  2. Step 2: Convert to fraction form
    19,445.83/26,810.67 = 12,720.80/x
  3. Step 3: Cross multiply
    19,445.83x = 26,810.67 × 12,720.80
  4. Step 4: Simplify right side
    19,445.83x = 341,053,170.94
  5. Step 5: Solve for x
    x = 341,053,170.94/19,445.83
  6. Step 6: Final answer
    x = 17,538.63

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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.