Home / 28,309.70-39,068.33-15,563.42

Finding the Fourth Proportional to 28,309.70, 39,068.33 and 15,563.42

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Solution

The fourth proportional to 28,309.70, 39,068.33 and 15,563.42 is: 21,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.70 : 39,068.33 = 15,563.42 : x
  2. Step 2: Convert to fraction form
    28,309.70/39,068.33 = 15,563.42/x
  3. Step 3: Cross multiply
    28,309.70x = 39,068.33 × 15,563.42
  4. Step 4: Simplify right side
    28,309.70x = 608,036,828.49
  5. Step 5: Solve for x
    x = 608,036,828.49/28,309.70
  6. Step 6: Final answer
    x = 21,478.04

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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.