Home / 12,840.15-19,269.95-8,670.27

Finding the Fourth Proportional to 12,840.15, 19,269.95 and 8,670.27

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Solution

The fourth proportional to 12,840.15, 19,269.95 and 8,670.27 is: 13,011.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.15 : 19,269.95 = 8,670.27 : x
  2. Step 2: Convert to fraction form
    12,840.15/19,269.95 = 8,670.27/x
  3. Step 3: Cross multiply
    12,840.15x = 19,269.95 × 8,670.27
  4. Step 4: Simplify right side
    12,840.15x = 167,075,669.39
  5. Step 5: Solve for x
    x = 167,075,669.39/12,840.15
  6. Step 6: Final answer
    x = 13,011.97

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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.