Home / 13,328.94-19,988.86-9,620.16

Finding the Fourth Proportional to 13,328.94, 19,988.86 and 9,620.16

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Solution

The fourth proportional to 13,328.94, 19,988.86 and 9,620.16 is: 14,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.94 : 19,988.86 = 9,620.16 : x
  2. Step 2: Convert to fraction form
    13,328.94/19,988.86 = 9,620.16/x
  3. Step 3: Cross multiply
    13,328.94x = 19,988.86 × 9,620.16
  4. Step 4: Simplify right side
    13,328.94x = 192,296,031.42
  5. Step 5: Solve for x
    x = 192,296,031.42/13,328.94
  6. Step 6: Final answer
    x = 14,426.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.