Home / 28,530.35-39,371.65-15,955.10

Finding the Fourth Proportional to 28,530.35, 39,371.65 and 15,955.10

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Solution

The fourth proportional to 28,530.35, 39,371.65 and 15,955.10 is: 22,017.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.35 : 39,371.65 = 15,955.10 : x
  2. Step 2: Convert to fraction form
    28,530.35/39,371.65 = 15,955.10/x
  3. Step 3: Cross multiply
    28,530.35x = 39,371.65 × 15,955.10
  4. Step 4: Simplify right side
    28,530.35x = 628,178,612.92
  5. Step 5: Solve for x
    x = 628,178,612.92/28,530.35
  6. Step 6: Final answer
    x = 22,017.91

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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.