Home / 13,688.04-20,539.98-5,373.72

Finding the Fourth Proportional to 13,688.04, 20,539.98 and 5,373.72

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Solution

The fourth proportional to 13,688.04, 20,539.98 and 5,373.72 is: 8,063.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.04 : 20,539.98 = 5,373.72 : x
  2. Step 2: Convert to fraction form
    13,688.04/20,539.98 = 5,373.72/x
  3. Step 3: Cross multiply
    13,688.04x = 20,539.98 × 5,373.72
  4. Step 4: Simplify right side
    13,688.04x = 110,376,101.33
  5. Step 5: Solve for x
    x = 110,376,101.33/13,688.04
  6. Step 6: Final answer
    x = 8,063.69

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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.