Home / 13,318.68-18,457.48-13,130.76

Finding the Fourth Proportional to 13,318.68, 18,457.48 and 13,130.76

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Solution

The fourth proportional to 13,318.68, 18,457.48 and 13,130.76 is: 18,197.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.68 : 18,457.48 = 13,130.76 : x
  2. Step 2: Convert to fraction form
    13,318.68/18,457.48 = 13,130.76/x
  3. Step 3: Cross multiply
    13,318.68x = 18,457.48 × 13,130.76
  4. Step 4: Simplify right side
    13,318.68x = 242,360,740.08
  5. Step 5: Solve for x
    x = 242,360,740.08/13,318.68
  6. Step 6: Final answer
    x = 18,197.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.