Home / 28,026.30-38,675.12-15,279.21

Finding the Fourth Proportional to 28,026.30, 38,675.12 and 15,279.21

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Solution

The fourth proportional to 28,026.30, 38,675.12 and 15,279.21 is: 21,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,026.30 : 38,675.12 = 15,279.21 : x
  2. Step 2: Convert to fraction form
    28,026.30/38,675.12 = 15,279.21/x
  3. Step 3: Cross multiply
    28,026.30x = 38,675.12 × 15,279.21
  4. Step 4: Simplify right side
    28,026.30x = 590,925,203.86
  5. Step 5: Solve for x
    x = 590,925,203.86/28,026.30
  6. Step 6: Final answer
    x = 21,084.67

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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.