Home / 27,810.98-38,373.40-15,878.20

Finding the Fourth Proportional to 27,810.98, 38,373.40 and 15,878.20

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Solution

The fourth proportional to 27,810.98, 38,373.40 and 15,878.20 is: 21,908.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,810.98 : 38,373.40 = 15,878.20 : x
  2. Step 2: Convert to fraction form
    27,810.98/38,373.40 = 15,878.20/x
  3. Step 3: Cross multiply
    27,810.98x = 38,373.40 × 15,878.20
  4. Step 4: Simplify right side
    27,810.98x = 609,300,519.88
  5. Step 5: Solve for x
    x = 609,300,519.88/27,810.98
  6. Step 6: Final answer
    x = 21,908.63

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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.