Home / 19,873.10-27,427.47-12,820.03

Finding the Fourth Proportional to 19,873.10, 27,427.47 and 12,820.03

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Solution

The fourth proportional to 19,873.10, 27,427.47 and 12,820.03 is: 17,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.10 : 27,427.47 = 12,820.03 : x
  2. Step 2: Convert to fraction form
    19,873.10/27,427.47 = 12,820.03/x
  3. Step 3: Cross multiply
    19,873.10x = 27,427.47 × 12,820.03
  4. Step 4: Simplify right side
    19,873.10x = 351,620,988.22
  5. Step 5: Solve for x
    x = 351,620,988.22/19,873.10
  6. Step 6: Final answer
    x = 17,693.31

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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.