Home / 15,368.16-21,109.08-15,072.96

Finding the Fourth Proportional to 15,368.16, 21,109.08 and 15,072.96

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Solution

The fourth proportional to 15,368.16, 21,109.08 and 15,072.96 is: 20,703.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.16 : 21,109.08 = 15,072.96 : x
  2. Step 2: Convert to fraction form
    15,368.16/21,109.08 = 15,072.96/x
  3. Step 3: Cross multiply
    15,368.16x = 21,109.08 × 15,072.96
  4. Step 4: Simplify right side
    15,368.16x = 318,176,318.48
  5. Step 5: Solve for x
    x = 318,176,318.48/15,368.16
  6. Step 6: Final answer
    x = 20,703.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.