Home / 28,416.98-39,215.50-15,842.18

Finding the Fourth Proportional to 28,416.98, 39,215.50 and 15,842.18

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Solution

The fourth proportional to 28,416.98, 39,215.50 and 15,842.18 is: 21,862.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.98 : 39,215.50 = 15,842.18 : x
  2. Step 2: Convert to fraction form
    28,416.98/39,215.50 = 15,842.18/x
  3. Step 3: Cross multiply
    28,416.98x = 39,215.50 × 15,842.18
  4. Step 4: Simplify right side
    28,416.98x = 621,259,009.79
  5. Step 5: Solve for x
    x = 621,259,009.79/28,416.98
  6. Step 6: Final answer
    x = 21,862.25

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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.