Home / 13,387.67-18,475.68-7,420.01

Finding the Fourth Proportional to 13,387.67, 18,475.68 and 7,420.01

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Solution

The fourth proportional to 13,387.67, 18,475.68 and 7,420.01 is: 10,240.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.67 : 18,475.68 = 7,420.01 : x
  2. Step 2: Convert to fraction form
    13,387.67/18,475.68 = 7,420.01/x
  3. Step 3: Cross multiply
    13,387.67x = 18,475.68 × 7,420.01
  4. Step 4: Simplify right side
    13,387.67x = 137,089,730.36
  5. Step 5: Solve for x
    x = 137,089,730.36/13,387.67
  6. Step 6: Final answer
    x = 10,240.00

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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.