Home / 28,675.12-39,570.88-15,927.92

Finding the Fourth Proportional to 28,675.12, 39,570.88 and 15,927.92

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Solution

The fourth proportional to 28,675.12, 39,570.88 and 15,927.92 is: 21,980.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,675.12 : 39,570.88 = 15,927.92 : x
  2. Step 2: Convert to fraction form
    28,675.12/39,570.88 = 15,927.92/x
  3. Step 3: Cross multiply
    28,675.12x = 39,570.88 × 15,927.92
  4. Step 4: Simplify right side
    28,675.12x = 630,281,810.97
  5. Step 5: Solve for x
    x = 630,281,810.97/28,675.12
  6. Step 6: Final answer
    x = 21,980.09

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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.