Home / 19,490.61-26,909.34-13,520.19

Finding the Fourth Proportional to 19,490.61, 26,909.34 and 13,520.19

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Solution

The fourth proportional to 19,490.61, 26,909.34 and 13,520.19 is: 18,666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,490.61 : 26,909.34 = 13,520.19 : x
  2. Step 2: Convert to fraction form
    19,490.61/26,909.34 = 13,520.19/x
  3. Step 3: Cross multiply
    19,490.61x = 26,909.34 × 13,520.19
  4. Step 4: Simplify right side
    19,490.61x = 363,819,187.43
  5. Step 5: Solve for x
    x = 363,819,187.43/19,490.61
  6. Step 6: Final answer
    x = 18,666.39

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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.