Home / 20,676.41-28,522.93-13,510.52

Finding the Fourth Proportional to 20,676.41, 28,522.93 and 13,510.52

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Solution

The fourth proportional to 20,676.41, 28,522.93 and 13,510.52 is: 18,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.41 : 28,522.93 = 13,510.52 : x
  2. Step 2: Convert to fraction form
    20,676.41/28,522.93 = 13,510.52/x
  3. Step 3: Cross multiply
    20,676.41x = 28,522.93 × 13,510.52
  4. Step 4: Simplify right side
    20,676.41x = 385,359,572.13
  5. Step 5: Solve for x
    x = 385,359,572.13/20,676.41
  6. Step 6: Final answer
    x = 18,637.64

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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.