Home / 10,136.81-13,988.66-5,660.63

Finding the Fourth Proportional to 10,136.81, 13,988.66 and 5,660.63

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Solution

The fourth proportional to 10,136.81, 13,988.66 and 5,660.63 is: 7,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,136.81 : 13,988.66 = 5,660.63 : x
  2. Step 2: Convert to fraction form
    10,136.81/13,988.66 = 5,660.63/x
  3. Step 3: Cross multiply
    10,136.81x = 13,988.66 × 5,660.63
  4. Step 4: Simplify right side
    10,136.81x = 79,184,635.12
  5. Step 5: Solve for x
    x = 79,184,635.12/10,136.81
  6. Step 6: Final answer
    x = 7,811.60

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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.