Home / 28,036.98-38,690.55-15,290.27

Finding the Fourth Proportional to 28,036.98, 38,690.55 and 15,290.27

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Solution

The fourth proportional to 28,036.98, 38,690.55 and 15,290.27 is: 21,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.98 : 38,690.55 = 15,290.27 : x
  2. Step 2: Convert to fraction form
    28,036.98/38,690.55 = 15,290.27/x
  3. Step 3: Cross multiply
    28,036.98x = 38,690.55 × 15,290.27
  4. Step 4: Simplify right side
    28,036.98x = 591,588,762.50
  5. Step 5: Solve for x
    x = 591,588,762.50/28,036.98
  6. Step 6: Final answer
    x = 21,100.30

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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.