Home / 21,135.48-31,703.49-10,043.25

Finding the Fourth Proportional to 21,135.48, 31,703.49 and 10,043.25

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Solution

The fourth proportional to 21,135.48, 31,703.49 and 10,043.25 is: 15,065.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.48 : 31,703.49 = 10,043.25 : x
  2. Step 2: Convert to fraction form
    21,135.48/31,703.49 = 10,043.25/x
  3. Step 3: Cross multiply
    21,135.48x = 31,703.49 × 10,043.25
  4. Step 4: Simplify right side
    21,135.48x = 318,406,075.94
  5. Step 5: Solve for x
    x = 318,406,075.94/21,135.48
  6. Step 6: Final answer
    x = 15,065.00

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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.