Home / 13,477.85-18,598.63-7,812.15

Finding the Fourth Proportional to 13,477.85, 18,598.63 and 7,812.15

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Solution

The fourth proportional to 13,477.85, 18,598.63 and 7,812.15 is: 10,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.85 : 18,598.63 = 7,812.15 : x
  2. Step 2: Convert to fraction form
    13,477.85/18,598.63 = 7,812.15/x
  3. Step 3: Cross multiply
    13,477.85x = 18,598.63 × 7,812.15
  4. Step 4: Simplify right side
    13,477.85x = 145,295,317.34
  5. Step 5: Solve for x
    x = 145,295,317.34/13,477.85
  6. Step 6: Final answer
    x = 10,780.30

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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.