Home / 18,890.72-26,075.10-12,920.24

Finding the Fourth Proportional to 18,890.72, 26,075.10 and 12,920.24

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Solution

The fourth proportional to 18,890.72, 26,075.10 and 12,920.24 is: 17,833.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.72 : 26,075.10 = 12,920.24 : x
  2. Step 2: Convert to fraction form
    18,890.72/26,075.10 = 12,920.24/x
  3. Step 3: Cross multiply
    18,890.72x = 26,075.10 × 12,920.24
  4. Step 4: Simplify right side
    18,890.72x = 336,896,550.02
  5. Step 5: Solve for x
    x = 336,896,550.02/18,890.72
  6. Step 6: Final answer
    x = 17,833.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.