Home / 13,090.86-18,065.39-7,122.53

Finding the Fourth Proportional to 13,090.86, 18,065.39 and 7,122.53

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Solution

The fourth proportional to 13,090.86, 18,065.39 and 7,122.53 is: 9,829.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.86 : 18,065.39 = 7,122.53 : x
  2. Step 2: Convert to fraction form
    13,090.86/18,065.39 = 7,122.53/x
  3. Step 3: Cross multiply
    13,090.86x = 18,065.39 × 7,122.53
  4. Step 4: Simplify right side
    13,090.86x = 128,671,156.30
  5. Step 5: Solve for x
    x = 128,671,156.30/13,090.86
  6. Step 6: Final answer
    x = 9,829.08

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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.