Home / 28,430.06-42,644.75-12,847.68

Finding the Fourth Proportional to 28,430.06, 42,644.75 and 12,847.68

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Solution

The fourth proportional to 28,430.06, 42,644.75 and 12,847.68 is: 19,271.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.06 : 42,644.75 = 12,847.68 : x
  2. Step 2: Convert to fraction form
    28,430.06/42,644.75 = 12,847.68/x
  3. Step 3: Cross multiply
    28,430.06x = 42,644.75 × 12,847.68
  4. Step 4: Simplify right side
    28,430.06x = 547,886,037.44
  5. Step 5: Solve for x
    x = 547,886,037.44/28,430.06
  6. Step 6: Final answer
    x = 19,271.37

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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.