Home / 20,639.56-28,492.52-14,683.72

Finding the Fourth Proportional to 20,639.56, 28,492.52 and 14,683.72

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Solution

The fourth proportional to 20,639.56, 28,492.52 and 14,683.72 is: 20,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.56 : 28,492.52 = 14,683.72 : x
  2. Step 2: Convert to fraction form
    20,639.56/28,492.52 = 14,683.72/x
  3. Step 3: Cross multiply
    20,639.56x = 28,492.52 × 14,683.72
  4. Step 4: Simplify right side
    20,639.56x = 418,376,185.77
  5. Step 5: Solve for x
    x = 418,376,185.77/20,639.56
  6. Step 6: Final answer
    x = 20,270.60

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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.