Home / 20,313.90-28,033.80-11,362.98

Finding the Fourth Proportional to 20,313.90, 28,033.80 and 11,362.98

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Solution

The fourth proportional to 20,313.90, 28,033.80 and 11,362.98 is: 15,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.90 : 28,033.80 = 11,362.98 : x
  2. Step 2: Convert to fraction form
    20,313.90/28,033.80 = 11,362.98/x
  3. Step 3: Cross multiply
    20,313.90x = 28,033.80 × 11,362.98
  4. Step 4: Simplify right side
    20,313.90x = 318,547,508.72
  5. Step 5: Solve for x
    x = 318,547,508.72/20,313.90
  6. Step 6: Final answer
    x = 15,681.26

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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.