Home / 28,019.44-38,666.82-15,444.40

Finding the Fourth Proportional to 28,019.44, 38,666.82 and 15,444.40

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Solution

The fourth proportional to 28,019.44, 38,666.82 and 15,444.40 is: 21,313.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.44 : 38,666.82 = 15,444.40 : x
  2. Step 2: Convert to fraction form
    28,019.44/38,666.82 = 15,444.40/x
  3. Step 3: Cross multiply
    28,019.44x = 38,666.82 × 15,444.40
  4. Step 4: Simplify right side
    28,019.44x = 597,185,834.81
  5. Step 5: Solve for x
    x = 597,185,834.81/28,019.44
  6. Step 6: Final answer
    x = 21,313.27

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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.