Home / 28,127.08-42,191.36-12,323.98

Finding the Fourth Proportional to 28,127.08, 42,191.36 and 12,323.98

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Solution

The fourth proportional to 28,127.08, 42,191.36 and 12,323.98 is: 18,486.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.08 : 42,191.36 = 12,323.98 : x
  2. Step 2: Convert to fraction form
    28,127.08/42,191.36 = 12,323.98/x
  3. Step 3: Cross multiply
    28,127.08x = 42,191.36 × 12,323.98
  4. Step 4: Simplify right side
    28,127.08x = 519,965,476.81
  5. Step 5: Solve for x
    x = 519,965,476.81/28,127.08
  6. Step 6: Final answer
    x = 18,486.29

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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.