Home / 28,455.10-42,653.96-9,722.38

Finding the Fourth Proportional to 28,455.10, 42,653.96 and 9,722.38

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Solution

The fourth proportional to 28,455.10, 42,653.96 and 9,722.38 is: 14,573.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.10 : 42,653.96 = 9,722.38 : x
  2. Step 2: Convert to fraction form
    28,455.10/42,653.96 = 9,722.38/x
  3. Step 3: Cross multiply
    28,455.10x = 42,653.96 × 9,722.38
  4. Step 4: Simplify right side
    28,455.10x = 414,697,968.81
  5. Step 5: Solve for x
    x = 414,697,968.81/28,455.10
  6. Step 6: Final answer
    x = 14,573.77

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1.5x scale

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.