Home / 28,019.06-38,666.31-15,443.81

Finding the Fourth Proportional to 28,019.06, 38,666.31 and 15,443.81

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Solution

The fourth proportional to 28,019.06, 38,666.31 and 15,443.81 is: 21,312.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.06 : 38,666.31 = 15,443.81 : x
  2. Step 2: Convert to fraction form
    28,019.06/38,666.31 = 15,443.81/x
  3. Step 3: Cross multiply
    28,019.06x = 38,666.31 × 15,443.81
  4. Step 4: Simplify right side
    28,019.06x = 597,155,145.04
  5. Step 5: Solve for x
    x = 597,155,145.04/28,019.06
  6. Step 6: Final answer
    x = 21,312.46

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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.