Home / 13,681.16-20,509.32-7,099.64

Finding the Fourth Proportional to 13,681.16, 20,509.32 and 7,099.64

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Solution

The fourth proportional to 13,681.16, 20,509.32 and 7,099.64 is: 10,643.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.16 : 20,509.32 = 7,099.64 : x
  2. Step 2: Convert to fraction form
    13,681.16/20,509.32 = 7,099.64/x
  3. Step 3: Cross multiply
    13,681.16x = 20,509.32 × 7,099.64
  4. Step 4: Simplify right side
    13,681.16x = 145,608,788.64
  5. Step 5: Solve for x
    x = 145,608,788.64/13,681.16
  6. Step 6: Final answer
    x = 10,643.01

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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.