Home / 28,455.48-42,688.23-9,731.12

Finding the Fourth Proportional to 28,455.48, 42,688.23 and 9,731.12

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Solution

The fourth proportional to 28,455.48, 42,688.23 and 9,731.12 is: 14,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.48 : 42,688.23 = 9,731.12 : x
  2. Step 2: Convert to fraction form
    28,455.48/42,688.23 = 9,731.12/x
  3. Step 3: Cross multiply
    28,455.48x = 42,688.23 × 9,731.12
  4. Step 4: Simplify right side
    28,455.48x = 415,404,075.28
  5. Step 5: Solve for x
    x = 415,404,075.28/28,455.48
  6. Step 6: Final answer
    x = 14,598.39

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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.