Home / 28,728.79-43,056.68-12,916.93

Finding the Fourth Proportional to 28,728.79, 43,056.68 and 12,916.93

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Solution

The fourth proportional to 28,728.79, 43,056.68 and 12,916.93 is: 19,358.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.79 : 43,056.68 = 12,916.93 : x
  2. Step 2: Convert to fraction form
    28,728.79/43,056.68 = 12,916.93/x
  3. Step 3: Cross multiply
    28,728.79x = 43,056.68 × 12,916.93
  4. Step 4: Simplify right side
    28,728.79x = 556,159,949.37
  5. Step 5: Solve for x
    x = 556,159,949.37/28,728.79
  6. Step 6: Final answer
    x = 19,358.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.