Home / 19,490.60-26,890.70-13,826.28

Finding the Fourth Proportional to 19,490.60, 26,890.70 and 13,826.28

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Solution

The fourth proportional to 19,490.60, 26,890.70 and 13,826.28 is: 19,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,490.60 : 26,890.70 = 13,826.28 : x
  2. Step 2: Convert to fraction form
    19,490.60/26,890.70 = 13,826.28/x
  3. Step 3: Cross multiply
    19,490.60x = 26,890.70 × 13,826.28
  4. Step 4: Simplify right side
    19,490.60x = 371,798,347.60
  5. Step 5: Solve for x
    x = 371,798,347.60/19,490.60
  6. Step 6: Final answer
    x = 19,075.78

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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.