Home / 28,305.04-39,061.48-15,730.96

Finding the Fourth Proportional to 28,305.04, 39,061.48 and 15,730.96

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Solution

The fourth proportional to 28,305.04, 39,061.48 and 15,730.96 is: 21,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.04 : 39,061.48 = 15,730.96 : x
  2. Step 2: Convert to fraction form
    28,305.04/39,061.48 = 15,730.96/x
  3. Step 3: Cross multiply
    28,305.04x = 39,061.48 × 15,730.96
  4. Step 4: Simplify right side
    28,305.04x = 614,474,579.42
  5. Step 5: Solve for x
    x = 614,474,579.42/28,305.04
  6. Step 6: Final answer
    x = 21,709.02

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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.