Home / 14,280.68-19,709.75-8,315.87

Finding the Fourth Proportional to 14,280.68, 19,709.75 and 8,315.87

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Solution

The fourth proportional to 14,280.68, 19,709.75 and 8,315.87 is: 11,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.68 : 19,709.75 = 8,315.87 : x
  2. Step 2: Convert to fraction form
    14,280.68/19,709.75 = 8,315.87/x
  3. Step 3: Cross multiply
    14,280.68x = 19,709.75 × 8,315.87
  4. Step 4: Simplify right side
    14,280.68x = 163,903,640.97
  5. Step 5: Solve for x
    x = 163,903,640.97/14,280.68
  6. Step 6: Final answer
    x = 11,477.30

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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.