Home / 28,315.47-39,075.38-15,568.87

Finding the Fourth Proportional to 28,315.47, 39,075.38 and 15,568.87

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Solution

The fourth proportional to 28,315.47, 39,075.38 and 15,568.87 is: 21,485.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.47 : 39,075.38 = 15,568.87 : x
  2. Step 2: Convert to fraction form
    28,315.47/39,075.38 = 15,568.87/x
  3. Step 3: Cross multiply
    28,315.47x = 39,075.38 × 15,568.87
  4. Step 4: Simplify right side
    28,315.47x = 608,359,511.42
  5. Step 5: Solve for x
    x = 608,359,511.42/28,315.47
  6. Step 6: Final answer
    x = 21,485.06

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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.