Home / 12,553.20-17,316-8,075.52

Finding the Fourth Proportional to 12,553.20, 17,316 and 8,075.52

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Solution

The fourth proportional to 12,553.20, 17,316 and 8,075.52 is: 11,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,553.20 : 17,316 = 8,075.52 : x
  2. Step 2: Convert to fraction form
    12,553.20/17,316 = 8,075.52/x
  3. Step 3: Cross multiply
    12,553.20x = 17,316 × 8,075.52
  4. Step 4: Simplify right side
    12,553.20x = 139,835,704.32
  5. Step 5: Solve for x
    x = 139,835,704.32/12,553.20
  6. Step 6: Final answer
    x = 11,139.45

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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.