Home / 13,136.04-19,571.30-12,509.10

Finding the Fourth Proportional to 13,136.04, 19,571.30 and 12,509.10

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Solution

The fourth proportional to 13,136.04, 19,571.30 and 12,509.10 is: 18,637.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.04 : 19,571.30 = 12,509.10 : x
  2. Step 2: Convert to fraction form
    13,136.04/19,571.30 = 12,509.10/x
  3. Step 3: Cross multiply
    13,136.04x = 19,571.30 × 12,509.10
  4. Step 4: Simplify right side
    13,136.04x = 244,819,403.56
  5. Step 5: Solve for x
    x = 244,819,403.56/13,136.04
  6. Step 6: Final answer
    x = 18,637.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.