Home / 14,715.08-20,311.45-9,409.91

Finding the Fourth Proportional to 14,715.08, 20,311.45 and 9,409.91

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Solution

The fourth proportional to 14,715.08, 20,311.45 and 9,409.91 is: 12,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,715.08 : 20,311.45 = 9,409.91 : x
  2. Step 2: Convert to fraction form
    14,715.08/20,311.45 = 9,409.91/x
  3. Step 3: Cross multiply
    14,715.08x = 20,311.45 × 9,409.91
  4. Step 4: Simplify right side
    14,715.08x = 191,128,943.72
  5. Step 5: Solve for x
    x = 191,128,943.72/14,715.08
  6. Step 6: Final answer
    x = 12,988.65

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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.