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Finding the Fourth Proportional to 19,538.07, 29,328.98 and 12,977.07

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Solution

The fourth proportional to 19,538.07, 29,328.98 and 12,977.07 is: 19,480.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,538.07 : 29,328.98 = 12,977.07 : x
  2. Step 2: Convert to fraction form
    19,538.07/29,328.98 = 12,977.07/x
  3. Step 3: Cross multiply
    19,538.07x = 29,328.98 × 12,977.07
  4. Step 4: Simplify right side
    19,538.07x = 380,604,226.49
  5. Step 5: Solve for x
    x = 380,604,226.49/19,538.07
  6. Step 6: Final answer
    x = 19,480.13

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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.