Home / 12,526.29-18,789.02-5,128.65

Finding the Fourth Proportional to 12,526.29, 18,789.02 and 5,128.65

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Solution

The fourth proportional to 12,526.29, 18,789.02 and 5,128.65 is: 7,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.29 : 18,789.02 = 5,128.65 : x
  2. Step 2: Convert to fraction form
    12,526.29/18,789.02 = 5,128.65/x
  3. Step 3: Cross multiply
    12,526.29x = 18,789.02 × 5,128.65
  4. Step 4: Simplify right side
    12,526.29x = 96,362,281.78
  5. Step 5: Solve for x
    x = 96,362,281.78/12,526.29
  6. Step 6: Final answer
    x = 7,692.80

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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.