Home / 12,913.30-19,337.55-8,506.90

Finding the Fourth Proportional to 12,913.30, 19,337.55 and 8,506.90

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Solution

The fourth proportional to 12,913.30, 19,337.55 and 8,506.90 is: 12,739.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.30 : 19,337.55 = 8,506.90 : x
  2. Step 2: Convert to fraction form
    12,913.30/19,337.55 = 8,506.90/x
  3. Step 3: Cross multiply
    12,913.30x = 19,337.55 × 8,506.90
  4. Step 4: Simplify right side
    12,913.30x = 164,502,604.10
  5. Step 5: Solve for x
    x = 164,502,604.10/12,913.30
  6. Step 6: Final answer
    x = 12,739.01

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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.