Home / 12,136.47-16,721.55-10,018.74

Finding the Fourth Proportional to 12,136.47, 16,721.55 and 10,018.74

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Solution

The fourth proportional to 12,136.47, 16,721.55 and 10,018.74 is: 13,803.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.47 : 16,721.55 = 10,018.74 : x
  2. Step 2: Convert to fraction form
    12,136.47/16,721.55 = 10,018.74/x
  3. Step 3: Cross multiply
    12,136.47x = 16,721.55 × 10,018.74
  4. Step 4: Simplify right side
    12,136.47x = 167,528,861.85
  5. Step 5: Solve for x
    x = 167,528,861.85/12,136.47
  6. Step 6: Final answer
    x = 13,803.76

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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.