Home / 15,075.40-20,804.61-11,291.89

Finding the Fourth Proportional to 15,075.40, 20,804.61 and 11,291.89

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Solution

The fourth proportional to 15,075.40, 20,804.61 and 11,291.89 is: 15,583.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.40 : 20,804.61 = 11,291.89 : x
  2. Step 2: Convert to fraction form
    15,075.40/20,804.61 = 11,291.89/x
  3. Step 3: Cross multiply
    15,075.40x = 20,804.61 × 11,291.89
  4. Step 4: Simplify right side
    15,075.40x = 234,923,367.61
  5. Step 5: Solve for x
    x = 234,923,367.61/15,075.40
  6. Step 6: Final answer
    x = 15,583.23

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1.5x scale

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.