Home / 28,240.17-38,968.86-15,492.81

Finding the Fourth Proportional to 28,240.17, 38,968.86 and 15,492.81

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Solution

The fourth proportional to 28,240.17, 38,968.86 and 15,492.81 is: 21,378.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.17 : 38,968.86 = 15,492.81 : x
  2. Step 2: Convert to fraction form
    28,240.17/38,968.86 = 15,492.81/x
  3. Step 3: Cross multiply
    28,240.17x = 38,968.86 × 15,492.81
  4. Step 4: Simplify right side
    28,240.17x = 603,737,143.90
  5. Step 5: Solve for x
    x = 603,737,143.90/28,240.17
  6. Step 6: Final answer
    x = 21,378.67

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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.