Home / 12,140.04-18,221.40-6,300.75

Finding the Fourth Proportional to 12,140.04, 18,221.40 and 6,300.75

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Solution

The fourth proportional to 12,140.04, 18,221.40 and 6,300.75 is: 9,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.04 : 18,221.40 = 6,300.75 : x
  2. Step 2: Convert to fraction form
    12,140.04/18,221.40 = 6,300.75/x
  3. Step 3: Cross multiply
    12,140.04x = 18,221.40 × 6,300.75
  4. Step 4: Simplify right side
    12,140.04x = 114,808,486.05
  5. Step 5: Solve for x
    x = 114,808,486.05/12,140.04
  6. Step 6: Final answer
    x = 9,457.01

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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.