Home / 28,476.21-39,296.48-15,730.46

Finding the Fourth Proportional to 28,476.21, 39,296.48 and 15,730.46

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Solution

The fourth proportional to 28,476.21, 39,296.48 and 15,730.46 is: 21,707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.21 : 39,296.48 = 15,730.46 : x
  2. Step 2: Convert to fraction form
    28,476.21/39,296.48 = 15,730.46/x
  3. Step 3: Cross multiply
    28,476.21x = 39,296.48 × 15,730.46
  4. Step 4: Simplify right side
    28,476.21x = 618,151,431.65
  5. Step 5: Solve for x
    x = 618,151,431.65/28,476.21
  6. Step 6: Final answer
    x = 21,707.64

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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.