Home / 28,521.66-39,360.16-15,774.18

Finding the Fourth Proportional to 28,521.66, 39,360.16 and 15,774.18

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Solution

The fourth proportional to 28,521.66, 39,360.16 and 15,774.18 is: 21,768.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.66 : 39,360.16 = 15,774.18 : x
  2. Step 2: Convert to fraction form
    28,521.66/39,360.16 = 15,774.18/x
  3. Step 3: Cross multiply
    28,521.66x = 39,360.16 × 15,774.18
  4. Step 4: Simplify right side
    28,521.66x = 620,874,248.67
  5. Step 5: Solve for x
    x = 620,874,248.67/28,521.66
  6. Step 6: Final answer
    x = 21,768.52

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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.