Home / 13,779.70-20,666.36-6,752.68

Finding the Fourth Proportional to 13,779.70, 20,666.36 and 6,752.68

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Solution

The fourth proportional to 13,779.70, 20,666.36 and 6,752.68 is: 10,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.70 : 20,666.36 = 6,752.68 : x
  2. Step 2: Convert to fraction form
    13,779.70/20,666.36 = 6,752.68/x
  3. Step 3: Cross multiply
    13,779.70x = 20,666.36 × 6,752.68
  4. Step 4: Simplify right side
    13,779.70x = 139,553,315.84
  5. Step 5: Solve for x
    x = 139,553,315.84/13,779.70
  6. Step 6: Final answer
    x = 10,127.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.