Home / 13,130.65-19,679.55-6,558.67

Finding the Fourth Proportional to 13,130.65, 19,679.55 and 6,558.67

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Solution

The fourth proportional to 13,130.65, 19,679.55 and 6,558.67 is: 9,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.65 : 19,679.55 = 6,558.67 : x
  2. Step 2: Convert to fraction form
    13,130.65/19,679.55 = 6,558.67/x
  3. Step 3: Cross multiply
    13,130.65x = 19,679.55 × 6,558.67
  4. Step 4: Simplify right side
    13,130.65x = 129,071,674.20
  5. Step 5: Solve for x
    x = 129,071,674.20/13,130.65
  6. Step 6: Final answer
    x = 9,829.80

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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.