Home / 28,019.36-38,666.68-15,444.08

Finding the Fourth Proportional to 28,019.36, 38,666.68 and 15,444.08

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Solution

The fourth proportional to 28,019.36, 38,666.68 and 15,444.08 is: 21,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.36 : 38,666.68 = 15,444.08 : x
  2. Step 2: Convert to fraction form
    28,019.36/38,666.68 = 15,444.08/x
  3. Step 3: Cross multiply
    28,019.36x = 38,666.68 × 15,444.08
  4. Step 4: Simplify right side
    28,019.36x = 597,171,299.25
  5. Step 5: Solve for x
    x = 597,171,299.25/28,019.36
  6. Step 6: Final answer
    x = 21,312.81

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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.