Home / 12,478.65-18,710.34-6,145.53

Finding the Fourth Proportional to 12,478.65, 18,710.34 and 6,145.53

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Solution

The fourth proportional to 12,478.65, 18,710.34 and 6,145.53 is: 9,214.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.65 : 18,710.34 = 6,145.53 : x
  2. Step 2: Convert to fraction form
    12,478.65/18,710.34 = 6,145.53/x
  3. Step 3: Cross multiply
    12,478.65x = 18,710.34 × 6,145.53
  4. Step 4: Simplify right side
    12,478.65x = 114,984,955.78
  5. Step 5: Solve for x
    x = 114,984,955.78/12,478.65
  6. Step 6: Final answer
    x = 9,214.53

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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.