Home / 20,621.31-30,931.93-5,038.93

Finding the Fourth Proportional to 20,621.31, 30,931.93 and 5,038.93

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Solution

The fourth proportional to 20,621.31, 30,931.93 and 5,038.93 is: 7,558.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.31 : 30,931.93 = 5,038.93 : x
  2. Step 2: Convert to fraction form
    20,621.31/30,931.93 = 5,038.93/x
  3. Step 3: Cross multiply
    20,621.31x = 30,931.93 × 5,038.93
  4. Step 4: Simplify right side
    20,621.31x = 155,863,830.03
  5. Step 5: Solve for x
    x = 155,863,830.03/20,621.31
  6. Step 6: Final answer
    x = 7,558.39

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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.