Home / 13,321.86-19,980.55-4,886.62

Finding the Fourth Proportional to 13,321.86, 19,980.55 and 4,886.62

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Solution

The fourth proportional to 13,321.86, 19,980.55 and 4,886.62 is: 7,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.86 : 19,980.55 = 4,886.62 : x
  2. Step 2: Convert to fraction form
    13,321.86/19,980.55 = 4,886.62/x
  3. Step 3: Cross multiply
    13,321.86x = 19,980.55 × 4,886.62
  4. Step 4: Simplify right side
    13,321.86x = 97,637,355.24
  5. Step 5: Solve for x
    x = 97,637,355.24/13,321.86
  6. Step 6: Final answer
    x = 7,329.11

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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.