Home / 28,310.45-39,068.87-15,564.19

Finding the Fourth Proportional to 28,310.45, 39,068.87 and 15,564.19

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Solution

The fourth proportional to 28,310.45, 39,068.87 and 15,564.19 is: 21,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.45 : 39,068.87 = 15,564.19 : x
  2. Step 2: Convert to fraction form
    28,310.45/39,068.87 = 15,564.19/x
  3. Step 3: Cross multiply
    28,310.45x = 39,068.87 × 15,564.19
  4. Step 4: Simplify right side
    28,310.45x = 608,075,315.77
  5. Step 5: Solve for x
    x = 608,075,315.77/28,310.45
  6. Step 6: Final answer
    x = 21,478.83

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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.