Home / 20,586.60-28,406.73-13,019.58

Finding the Fourth Proportional to 20,586.60, 28,406.73 and 13,019.58

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Solution

The fourth proportional to 20,586.60, 28,406.73 and 13,019.58 is: 17,965.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.60 : 28,406.73 = 13,019.58 : x
  2. Step 2: Convert to fraction form
    20,586.60/28,406.73 = 13,019.58/x
  3. Step 3: Cross multiply
    20,586.60x = 28,406.73 × 13,019.58
  4. Step 4: Simplify right side
    20,586.60x = 369,843,693.77
  5. Step 5: Solve for x
    x = 369,843,693.77/20,586.60
  6. Step 6: Final answer
    x = 17,965.26

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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.