Home / 28,104.18-38,783.43-15,528.66

Finding the Fourth Proportional to 28,104.18, 38,783.43 and 15,528.66

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Solution

The fourth proportional to 28,104.18, 38,783.43 and 15,528.66 is: 21,429.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.18 : 38,783.43 = 15,528.66 : x
  2. Step 2: Convert to fraction form
    28,104.18/38,783.43 = 15,528.66/x
  3. Step 3: Cross multiply
    28,104.18x = 38,783.43 × 15,528.66
  4. Step 4: Simplify right side
    28,104.18x = 602,254,698.10
  5. Step 5: Solve for x
    x = 602,254,698.10/28,104.18
  6. Step 6: Final answer
    x = 21,429.36

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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.