Home / 13,681.08-20,521.58-5,355.26

Finding the Fourth Proportional to 13,681.08, 20,521.58 and 5,355.26

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Solution

The fourth proportional to 13,681.08, 20,521.58 and 5,355.26 is: 8,032.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.08 : 20,521.58 = 5,355.26 : x
  2. Step 2: Convert to fraction form
    13,681.08/20,521.58 = 5,355.26/x
  3. Step 3: Cross multiply
    13,681.08x = 20,521.58 × 5,355.26
  4. Step 4: Simplify right side
    13,681.08x = 109,898,267.13
  5. Step 5: Solve for x
    x = 109,898,267.13/13,681.08
  6. Step 6: Final answer
    x = 8,032.86

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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.