Home / 19,005.10-28,507.65-12,784.30

Finding the Fourth Proportional to 19,005.10, 28,507.65 and 12,784.30

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Solution

The fourth proportional to 19,005.10, 28,507.65 and 12,784.30 is: 19,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.10 : 28,507.65 = 12,784.30 : x
  2. Step 2: Convert to fraction form
    19,005.10/28,507.65 = 12,784.30/x
  3. Step 3: Cross multiply
    19,005.10x = 28,507.65 × 12,784.30
  4. Step 4: Simplify right side
    19,005.10x = 364,450,349.90
  5. Step 5: Solve for x
    x = 364,450,349.90/19,005.10
  6. Step 6: Final answer
    x = 19,176.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.