Home / 28,533.30-39,372.51-15,784.74

Finding the Fourth Proportional to 28,533.30, 39,372.51 and 15,784.74

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Solution

The fourth proportional to 28,533.30, 39,372.51 and 15,784.74 is: 21,781.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.30 : 39,372.51 = 15,784.74 : x
  2. Step 2: Convert to fraction form
    28,533.30/39,372.51 = 15,784.74/x
  3. Step 3: Cross multiply
    28,533.30x = 39,372.51 × 15,784.74
  4. Step 4: Simplify right side
    28,533.30x = 621,484,833.50
  5. Step 5: Solve for x
    x = 621,484,833.50/28,533.30
  6. Step 6: Final answer
    x = 21,781.04

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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.