Home / 21,075.38-31,617.70-7,927.76

Finding the Fourth Proportional to 21,075.38, 31,617.70 and 7,927.76

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Solution

The fourth proportional to 21,075.38, 31,617.70 and 7,927.76 is: 11,893.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.38 : 31,617.70 = 7,927.76 : x
  2. Step 2: Convert to fraction form
    21,075.38/31,617.70 = 7,927.76/x
  3. Step 3: Cross multiply
    21,075.38x = 31,617.70 × 7,927.76
  4. Step 4: Simplify right side
    21,075.38x = 250,657,379.26
  5. Step 5: Solve for x
    x = 250,657,379.26/21,075.38
  6. Step 6: Final answer
    x = 11,893.37

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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.