Home / 13,700.04-18,905.88-7,412.40

Finding the Fourth Proportional to 13,700.04, 18,905.88 and 7,412.40

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Solution

The fourth proportional to 13,700.04, 18,905.88 and 7,412.40 is: 10,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.04 : 18,905.88 = 7,412.40 : x
  2. Step 2: Convert to fraction form
    13,700.04/18,905.88 = 7,412.40/x
  3. Step 3: Cross multiply
    13,700.04x = 18,905.88 × 7,412.40
  4. Step 4: Simplify right side
    13,700.04x = 140,137,944.91
  5. Step 5: Solve for x
    x = 140,137,944.91/13,700.04
  6. Step 6: Final answer
    x = 10,229.02

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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.